Causes of Mental retardation

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Conditions listing medical complications: Mental retardation:

The following list of medical conditions have 'Mental retardation' or similar listed as a medical complication in our database. This computer-generated list of complications may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.

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More Information About Mental retardation

• Mental retardation: Introduction
• Diagnostic tests for Mental retardation
• Diagnosis Checklist: Questions Doctors Should Ask for Mental retardation
• Medical Textbooks Online for Mental retardation
• Symptom combinations for Mental retardation
• Travel-related causes of Mental retardation
• Patient Surveys
• Join in at the forums

List of 1917 causes of Mental retardation

This section shows a full list of all the diseases and conditions listed as a possible cause of Mental retardation in our database from various sources.

• 10q Partial Trisomy - mental retardation
• 11q Partial Trisomy - mental retardation
• 14q+ syndrome - mental retardation
• 18p minus syndrome - mental retardation
• 1q deletion - mental retardation
• 2-Hydroxyglutaricaciduria - mental retardation
• 2p21 deletion syndrome - mental retardation
• 2q deletion - mental retardation
• 3-Methylglutaconic aciduria type 1
• 3-Methylglutaconic aciduria type 3
• 3-Methylglutaconic aciduria type 4
• 3-methylglutaconic aciduria, type V - mental retardation
• 3C syndrome - mental retardation
• 3q deletion - mental retardation
• 4-hydroxyphenylacetic aciduria - mild mental retardation
• 46,XX chromosome 7 deletion p13 - mental retardation
• 47, XYY syndrome
• 47,XXX syndrome - mental retardation
• 48,XXXY syndrome
• 49,XXXXX syndrome
• 6-Pyruvoyl tetrahydropterin synthase deficiency - mental retardation
• Aarskog Syndrome - mild mental retardation
• Absence of septum pellucidum and septo-optic dysplasia - mental retardation
• Absence of septum pellucidum with porencephalia syndrome - mental retardation
• Absent corpus callosum - cataract - immunodeficiency - mental retardation
• Absent patellae - scrotal hypoplasia - renal anomalies - facial dysmorphism - mental retardation - mental retardation
• Acanthocytosis - mental retardation
• Accutane - Teratogenic Agent - mental retardation
• Acidemia, methylmalonic - mental retardation
• Acrocallosal Syndrome (Schinzel Type) - mental retardation
• Acrocephalopolydactyly II - mental retardation
• Acrocephaly - pulmonary stenosis - mental retardation - mental retardation
• Acrofacial dysostosis Catania form - mental retardation
• Acrofrontofacionasal dysostosis syndrome - mental retardation
• Acromesomelic dysplasia Hunter Thompson type - mental retardation
• Acropectorovertebral dysplasia - mental retardation
• Acrosphenosyndactylia - mental retardation
• Adducted thumb syndrome recessive form - mental retardation
• Adducted thumbs - arthrogryposis, Christian type - mental retardation
• Adducted thumbs Dundar type - mental retardation
• Adenylosuccinate lyase deficiency
• Adrenoleukodystrophy - mental retardation
• Agenesis of the corpus callosum - mental retardation - coloboma - micrognathia - mental retardation
• Agyria pachygyria polymicrogyria - mental retardation
• Agyria-pachygyria type 1 - mental retardation
• Aicardi Goutieres syndrome - mental retardation
• Aicardi syndrome - mental retardation
• Aicardi's syndrome
• Akesson syndrome - mental retardation
• Al Gazali Aziz Salem syndrome - mental retardation
• Al Gazali Sabrinathan Nair syndrome - mental retardation
• Albers-Schonberg disease - malignant recessive form - mental retardation
• Albright's hereditary osteodystrophy - mental retardation
• Aldred syndrome - mental retardation
• Alexander disease
• Alexander Syndrome - mental retardation
• Allan-Herndon-Dudley syndrome - mental retardation
• Alopecia mental retardation hypogonadism - mild mental retardation
• Alopecia mental retardation syndrome - mental retardation
• Alopecia, epilepsy, oligophrenia syndrome of Moynahan - mental retardation
• Alopecia, epilepsy, pyorrhea, mental subnormality - mental retardation
• Alopecia, mental retardation and neurological problems - mental retardation
• Alopecia-contractures-dwarfism-mental retardation - mental retardation
• Alpers Syndrome - mental retardation
• Alpha thalassaemia X-linked mental retardation syndrome
• Alpha-ketoglutarate dehydrogenase deficiency - mental retardation
• Alpha-L-iduronidase deficiency
• Alpha-mannosidase deficiency
• Alpha-mannosidosis type II - mental retardation
• Alpha-thalassemia/mental retardation syndrome, deletion type
• Alport Syndrome - mental retardation
• Alport syndrome - mental retardation - midface hypoplasia - elliptocytosis - mental retardation
• Aminoacidopathies - mental retardation
• Aminomethyltransferase deficiency
• Ampola syndrome - mental retardation
• Amyloidosis of gingiva and conjunctiva mental retardation - mental retardation
• Anauxetic dysplasia - mild mental retardation
• Andermann syndrome
• Angelman syndrome - Mental retardation
• Angelman's syndrome
• Angelman-Like Syndrome, X-linked - mental retardation
• Angelmann syndrome
• Angiokeratoma - mental retardation - coarse face - mental retardation
• Aniridia - ptosis - mental retardation - obesity, familial - mental retardation
• Aniridia - mental retardation syndrome - mental retardation
• Aniridia - renal agenesis - psychomotor retardation - mental retardation
• Aniridia cerebellar ataxia mental deficiency - physical retardation
• Aniridia III - mental retardation
• Aniridia ptosis mental retardation obesity familial type - mental retardation
• Anophthalmia - hand and foot defects - mental retardation - mental retardation
• Anophthalmia - heart and pulmonary anomalies - intellectual deficit - mental retardation
• Anophthalmia - hypothalamo-pituitary insufficiency - mental retardation
• Anophthalmia - hypyothalamo-pituitary insufficiency - mental retardation
• Anophthalmos with limb anomalies - mental retardation
• Ansell-Bywaters-Elderking syndrome - mental retardation
• Aortic arch anomaly with peculiar facies and mental retardation - mental retardation
• Aortic supravalvular stenosis - retarded mental development
• Apert syndrome - mental retardation
• Arachnodactyly - ataxia - cataract - aminoaciduria - mental retardation - mental retardation
• Arachnodactyly - mental retardation - dysmorphism - mental retardation
• Arakawa syndrome 1 - mental retardation
• Arginase deficiency - mental retardation
• Argininosuccinase lyase deficiency, neonatal - mental retardation
• Arginosuccinate synthetase deficiency
• Arginosuccinic aciduria
• Arima syndrome - mental retardation
• Arkless-Graham syndrome
• Arnold-Chiari malformation type 2 - mental dullness
• Arnold-Chiari malformation type 4 - mental retardation
• Arthritis - short stature - deafness - mental retardation
• Arthrogryposis - epileptic seizures - migrational brain disorder - mild mental retardation
• Arthrogryposis IUGR thoracic dystrophy - mental retardation
• Arthrogryposis multiplex congenita, distal, X-linked - mental retardation
• Arthrogryposis, congenital - myopathic seizures - mental retardation
• Aspartoacylase deficiency
• Aspartylglucosaminidase deficiency - mental retardation
• Aspartylglucosaminuria - mental retardation
• Aspartylglycosaminuria - mental retardation
• Ataxia - apraxia - mental retardation, X-linked - mental retardation
• Ataxia - diabetes - goiter - gonadal insufficiency - mental retardation
• Ataxia deafness reardon type - mental retardation
• Ataxia tapetoretinal degeneration - mental retardation
• Athabaskan brain stem dysgenesis - mental retardation
• Atkin-Flaitz-Patil syndrome
• Atkin-Flatiz syndrome - mental retardation
• ATR-X syndrome - mental retardation
• ATR16 - mental retardation
• Atrichia - mental and growth delay - mild mental retardation
• Atypical pyridoxine-dependent seizures - mental retardation
• Aughton syndrome - mental retardation
• Aural atresia - multiple congenital anomalies - mental retardation - mental retardation
• Auralcephalosyndactyly - mild mental retardation
• Autism
• Axenfeld-Rieger syndrome - mental retardation
• Baller-Gerold syndrome
• Bamforth syndrome - mental retardation
• Bangstad syndrome - mental retardation
• Baraitser burn fixen syndrome - mental retardation
• Baraitser-Rodeck-Garner syndrome - mental retardation
• Baraitser-Winter syndrome - mental retardation
• Bardet-Biedl syndrome
• Bartsocas Papa syndrome - mental retardation
• Bartter Syndrome - mental retardation
• Bartter's syndrome, antenatal type 1 - mental retardation
• Bartters syndrome, antenatal , type 2 - mental retardation
• Battaglia Neri syndrome - mental retardation
• BBB syndrome, X-linked - mental retardation
• Bd syndrome - mental retardation
• Behr syndrome
• Bellini-Chiumello-Rinoldi syndrome - mental retardation
• Ben-Ari-Shuper-Mimouni syndrome - mental retardation
• Benjamin syndrome - mental retardation
• Bentham-Driessen-Hanveld syndrome - mental retardation
• Berardinelli lipodystrophy syndrome
• Berlin Breakage syndrome - mental retardation
• Bertini syndrome
• Beta-mannosidosis - mental retardation
• Beta-ureidopropionase deficiency - mental retardation
• Biemond syndrome type 2 - mental retardation
• Bilateral frontoparietal polymicrogyria
• Bird-headed dwarfism with progressive ataxia, Insulin-resistant diabetes, goiter and primary gonadal insufficiency - mental retardation
• Bird-headed dwarfism, Montreal type - mental retardation
• Birth hypoxia
• Black locks, oculocutaneous albinism, and deafness of the sensorineural type
• Blepharonasofacial syndrome
• Blepharophimosis - ptosis - syndactyly - mental retardation - mental retardation
• Blepharophimosis syndrome
• Blepharophimosis syndrome Ohdo type - mental retardation
• Bobble-head doll syndrome - mental retardation
• BOD syndrome - mild mental retardation
• Bone dysplasia - corpus callosum agenesis - mental retardation
• Bonneman-Meinecke-Reich syndrome - mental retardation
• Bonnemann-Meinecke-Reich syndrome - mental retardation
• Borjeson-Forssman-Lehmann syndrome
• Bork-Stender-Schmidt syndrome - mild mental retardation
• Boscherini-Galasso-Manca-Bitti syndrome - mental retardation
• Bosviel syndrome - mental retardation
• Bowing of legs, anterior, with dwarfism - mild mental retardation
• Brachioskeletogenital syndrome - mental retardation
• Brachycephaly - deafness - cataract - mental retardation - mental retardation
• Brachycephaly - deafness - cataract - microstomia - mental retardation - mental retardation
• Brachydactyly - dwarfism - mental retardation - mental retardation
• Brachydactyly - mesomelia - mental retardation - heart defects - mental retardation
• Brachydactyly, mesomelia, mental retardation, aortic dilation, mitral valve prolapse and characteristic face - mental retardation
• Braddock Jones Superneau syndrome - mental retardation
• Brain injury
• Brain injury during birth
• Branchial clefts with characteristic facies, growth retardation, imperforate nasolacrimal duct, and - mental retardation
• Branchio-Oculo-Facial Syndrome - mental retardation
• Branchio-skeleto-genital syndrome - mental retardation
• BRESHECK syndrome
• Bruch-de Lange syndrome
• Bullous dystrophy, macular type - mental retardation
• Buntinx-Lormans-Martin syndrome - mental retardation
• Buttiens-Fryns syndrome - mental retardation
• C Syndrome - mental retardation
• CACH syndrome - mental retardation
• CAHMR syndrome - mental retardation
• Camera-Marugo-Cohen syndrome - mental retardation
• CAMFAK syndrome
• Camptodactyly syndrome, Guadalajara type III - mild mental retardation
• Camptodactyly, tall stature, and hearing loss syndrome - mental retardation
• Canavan disease - mental retardation
• Cantu Sanchez-Corona Fragoso syndrome - mental retardation
• Cantu Sanchez-Corona Garcia-cruz syndrome - mental retardation
• Cantu syndrome - mental retardation
• Carbamoyl-phosphate synthase 1 deficiency - mental retardation
• Carbamoylphosphate synthetase 1 deficiency disease
• Carbamoylphosphate synthetase deficiency
• Carbohydrate deficient glycoprotein syndrome type 1a
• Carbon Baby Syndrome - mental retardation
• Carbonic anhydrase type 2 deficiency
• Cardiocranial syndrome - mental retardation
• Cardiofaciocutaneous syndrome - mental retardation
• Carnosinaemia
• Cat Eye Syndrome - mild mental retardation
• Cataract - aberrant oral frenula - growth delay - mental retardation
• Cataract - ataxia - deafness - mild mental retardation
• Cataract - intellectual deficit - anal atresia - urinary defects - mental retardation
• Cataract deafness hypogonadism - mental retardation
• Cataract dental syndrome - mental retardation
• Caudal appendage - deafness - mental retardation
• Cayler syndrome - mental retardation
• CCFDN - mental retardation
• CDG syndrome type 1A - mental retardation
• Cerebellar ataxia - intellectual deficit - optic atrophy - skin abnormalities - mental retardation
• Cerebellar ataxia, autosomal recessive - mental retardation
• Cerebellar hypoplasia - mental retardation
• Cerebellar hypoplasia - tapetoretinal degeneration - mental retardation
• Cerebellar vermis hypoplasia - oligophrenia - congenital ataxia - coloboma - hepatic fibrosis - mental retardation
• Cerebellum agenesis - hydrocephaly - mental retardation
• Cerebral palsy
• Cerebro oculo genital syndrome - mental retardation
• Cerebro oculo skeleto renal syndrome - mental retardation
• Cerebro-facio-thoracic dysplasia - mental retardation
• Cerebro-oculo-nasal syndrome - mental retardation
• Cerebrocostomandibular syndrome
• Cerebrorenodigital syndrome - mental retardation
• Cerebrotendinous Xanthomatosus - mental retardation
• Ceroid lipofuscinosis neuronal 2 late infantile
• Ceroid lipofuscinosis neuronal type 8
• Ceroid lipofuscinosis, neuronal 1, infantile - progressive mental retardation
• Ceroid lipofuscinosis, neuronal 10 - mental retardation
• Ceroid lipofuscinosis, neuronal 3, juvenile
• Ceroid lipofuscinosis, neuronal 5
• Ceroid lipofuscinosis, neuronal 8 - mental retardation
• Ceroid lipofuscinosis, neuronal 8, northern epilepsy variant - progressive mental retardation
• Charcot-Marie-Tooth disease, X-linked recessive, 4 - mental retardation
• Charcot-Marie-Tooth-Hoffmann syndrome, X-linked type 2
• CHARGE syndrome
• Chickenpox - Teratogenic Agent - mental retardation
• Child abuse
• Childbirth injury
• Childhood disintegrative disorder
• Chitayat-Moore-Del Bigio syndrome - mental retardation
• Chitty Hall Baraitser syndrome - mental retardation
• Chitty-Hall-Webb syndrome - mental retardation
• Cholestanol storage disease
• Chondrodysplasia - disorder of sex development - mental retardation
• Chondrodysplasia - pseudohermaphrodism - mental retardation
• Chondrodysplasia punctata - mild mental retardation
• Chondrodysplasia punctata with steroid sulfatase deficiency - mental retardation
• Chondrodysplasia punctata, non rhizomelic type - mental retardation
• Chorioretinopathy dominant form - microcephaly - mental retardation
• Choroideremia - mental retardation
• Choroido cerebral calcification syndrome infantile form - mental retardation
• Christian syndrome 1
• Christian-Demyer-Franken syndrome - mental retardation
• Chromosome 1, 1p36 deletion syndrome - mental retardation
• Chromosome 1, deletion q21 q25 - mental retardation
• Chromosome 1, monosomy 1p22 p13 - mental retardation
• Chromosome 1, monosomy 1p31 p22 - mental retardation
• Chromosome 1, monosomy 1p32 - mental retardation
• Chromosome 1, monosomy 1p34 p32 - mental retardation
• Chromosome 1, monosomy 1q25 q32 - mental retardation
• Chromosome 1, monosomy 1q4 - mental retardation
• Chromosome 1, pter-p36 - mental retardation
• Chromosome 1, trisomy 1q32 qter - mental retardation
• Chromosome 1, trisomy 1q42 qter - mental retardation
• Chromosome 1, uniparental disomy 1q12 q21 - Mental retardation
• Chromosome 10 ring syndrome - mental retardation
• Chromosome 10p deletion syndrome - mental retardation
• Chromosome 10p duplication/10q deletion syndrome - mental retardation
• Chromosome 11, deletion 11p - Mental retardation
• Chromosome 11, Partial Trisomy 11q - mental retardation
• Chromosome 11p, partial deletion - mental retardation
• Chromosome 11q duplication syndrome - mental retardation
• Chromosome 11q partial deletion - mental retardation
• Chromosome 12 ring syndrome - mental retardation
• Chromosome 12 trisomy - mental retardation
• Chromosome 12, Isochromosome 12p Mosaic - mental retardation
• Chromosome 12, trisomy 12q - Mental retardation
• Chromosome 12p deletion - Mental retardation
• Chromosome 12p deletion syndrome - mental retardation
• Chromosome 12p partial deletion - mental retardation
• Chromosome 12p tetrasomy syndrome - mental retardation
• Chromosome 12q duplication syndrome - mental retardation
• Chromosome 13 trisomy syndrome
• Chromosome 13p duplication - mental retardation
• Chromosome 13q deletion - Mental retardation
• Chromosome 13q deletion syndrome - mental retardation
• Chromosome 13q duplication syndrome - mental retardation
• Chromosome 14 deletion - mental retardation
• Chromosome 14 Ring - mental retardation
• Chromosome 14 trisomy - Mental retardation
• Chromosome 14 trisomy syndrome - mental retardation
• Chromosome 14 uniparental disomy syndrome - mental retardation
• Chromosome 14, trisomy mosaic - mental retardation
• Chromosome 14q deletion syndrome - mental retardation
• Chromosome 14q, proximal duplication - mental retardation
• Chromosome 14q, terminal deletion - mental retardation
• Chromosome 14q, terminal duplication - mental retardation
• Chromosome 15 inverted duplication - mental retardation
• Chromosome 15 Ring - mental retardation
• Chromosome 15 trisomy - mental retardation
• Chromosome 15, distal trisomy 15q - mental retardation
• Chromosome 15q duplication syndrome - mental retardation
• Chromosome 15q tetrasomy syndrome - mental retardation
• Chromosome 15q triplication syndrome - mental retardation
• Chromosome 15q, deletion - mental retardation
• Chromosome 15q, partial deletion - mental retardation
• Chromosome 15q, tetrasomy - Mental retardation
• Chromosome 15q, trisomy - Mental retardation
• Chromosome 15q13.3 microdeletion syndrome - mental retardation
• Chromosome 16p, partial duplication - mental retardation
• Chromosome 16q, partial deletion - mental retardation
• Chromosome 17 deletion - mental retardation
• Chromosome 17 ring - mental retardation
• Chromosome 17 trisomy - mental retardation
• Chromosome 17 trisomy mosaicism - mental retardation
• Chromosome 17, deletion 17q23 q24 - mental retardation
• Chromosome 17, trisomy 17p11.2 - mild mental retardation
• Chromosome 17p, partial deletion - mental retardation
• Chromosome 17p, partial duplication - mental retardation
• Chromosome 17q, partial duplication - mental retardation
• Chromosome 18 deletion syndrome - mental retardation
• Chromosome 18 Ring - mental retardation
• Chromosome 18 trisomy syndrome
• Chromosome 18, deletion 18q23 - mental retardation
• Chromosome 18, Tetrasomy 18p - mental retardation
• Chromosome 18, trisomy 18q - mental retardation
• Chromosome 18q, partial deletion - mental retardation
• Chromosome 19 ring syndrome - mental retardation
• Chromosome 19q, partial duplication - mental retardation
• Chromosome 1p deletion syndrome - mental retardation
• Chromosome 1p duplication syndrome - mental retardation
• Chromosome 1q deletion - Mental retardation
• Chromosome 1q duplication syndrome - mental retardation
• Chromosome 2 trisomy syndrome - mental retardation
• Chromosome 2, monosomy 2p22 - mental retardation
• Chromosome 2, monosomy 2pter p24 - mental retardation
• Chromosome 2, monosomy 2q - Mental retardation
• Chromosome 2, monosomy 2q24 - Mental retardation
• Chromosome 2, monosomy 2q37 - mental retardation
• Chromosome 2, trisomy 2p - Mental retardation
• Chromosome 2, trisomy 2q - Mental retardation
• Chromosome 20 ring - mental retardation
• Chromosome 20, deletion 20p - Mental retardation
• Chromosome 20p deletion syndrome - mental retardation
• Chromosome 21 monosomy - mental retardation
• Chromosome 21 Ring - mental retardation
• Chromosome 21 ring syndrome
• Chromosome 21, tetrasomy 21q - mental retardation
• Chromosome 21q deletion syndrome - mental retardation
• Chromosome 21q, partial deletion - mental retardation
• Chromosome 22 monosomy syndrome - mental retardation
• Chromosome 22 Ring - mental retardation
• Chromosome 22 ring syndrome
• Chromosome 22 suprenumerary marker - mental retardation
• Chromosome 22 trisomy mosaic - mental retardation
• Chromosome 22q deletion - mental retardation
• Chromosome 22q deletion syndrome - mental retardation
• Chromosome 22q duplication syndrome - mental retardation
• Chromosome 2p deletion syndrome - mental retardation
• Chromosome 2p duplication syndrome - mental retardation
• Chromosome 2q duplication syndrome - mental retardation
• Chromosome 3, monosomy 3p25 - mental retardation
• Chromosome 3, trisomy 3p - mental retardation
• Chromosome 3, trisomy 3q13 2 q25 - mental retardation
• Chromosome 3, Trisomy 3q2 - mental retardation
• Chromosome 3q29 microduplication syndrome - mental retardation
• Chromosome 4 ring syndrome - mental retardation
• Chromosome 4 short arm deletion - Mental retardation
• Chromosome 4, monosomy 4p14 p16 - mental retardation
• Chromosome 4, Monosomy 4q - mental retardation
• Chromosome 4, Monosomy Distal 4q - mental retardation
• Chromosome 4, partial trisomy distal 4q - mental retardation
• Chromosome 4, trisomy 4q - Mental retardation
• Chromosome 4p deletion syndrome - mental retardation
• Chromosome 4q duplication syndrome - mental retardation
• Chromosome 5, Trisomy 5p - mental retardation
• Chromosome 5, trisomy 5pter p13 3 - mental retardation
• Chromosome 5, trisomy 5q - Mental retardation
• Chromosome 5p duplication syndrome - mental retardation
• Chromosome 5p tetrasomy syndrome - mental retardation
• Chromosome 5q duplication syndrome - mental retardation
• Chromosome 6 ring syndrome - mental retardation
• Chromosome 6, monosomy 6p23 - mental retardation
• Chromosome 6, monosomy 6q - Mental retardation
• Chromosome 6, monosomy 6q1 - mental retardation
• Chromosome 6, partial trisomy 6q - mental retardation
• Chromosome 6, trisomy 6p - mental retardation
• Chromosome 6, trisomy 6q - Mental retardation
• Chromosome 6p deletion syndrome - mental retardation
• Chromosome 6q deletion syndrome - mental retardation
• Chromosome 6q duplication syndrome - mental retardation
• Chromosome 7 ring syndrome - mental retardation
• Chromosome 7, monosomy 7q21 - mental retardation
• Chromosome 7, monosomy 7q3 - mental retardation
• Chromosome 7, Partial Deletion of Short Arm - mental retardation
• Chromosome 7, partial monosomy 7p - mental retardation
• Chromosome 7, trisomy 7p - Mental retardation
• Chromosome 7, trisomy 7p13 p12 2 - mental retardation
• Chromosome 7, trisomy 7q - Mental retardation
• Chromosome 7p deletion syndrome - mental retardation
• Chromosome 7p duplication syndrome - mental retardation
• Chromosome 7q deletion syndrome
• Chromosome 7q duplication syndrome - mental retardation
• Chromosome 8 deletion - mental retardation
• Chromosome 8 recombinant syndrome - mental retardation
• Chromosome 8 ring - mental retardation
• Chromosome 8 trisomy syndrome - mental retardation
• Chromosome 8, monosomy 8p - mental retardation
• Chromosome 8, Monosomy 8p2 - mental retardation
• Chromosome 8, monosomy 8q - Mental retardation
• Chromosome 8, mosaic trisomy - Mental retardation
• Chromosome 8, partial trisomy - mental retardation
• Chromosome 8, trisomy - Mental retardation
• Chromosome 8, trisomy 8p - Mental retardation
• Chromosome 8, trisomy 8q - Mental retardation
• Chromosome 8p deletion syndrome - mental retardation
• Chromosome 8p duplication syndrome - mental retardation
• Chromosome 8p inverted duplication syndrome - mental retardation
• Chromosome 8p mosaic tetrasomy - mental retardation
• Chromosome 8q deletion syndrome - mental retardation
• Chromosome 8q duplication syndrome - mental retardation
• Chromosome 9 ring syndrome
• Chromosome 9 trisomy syndrome - mental retardation
• Chromosome 9, monosomy 9p - mental retardation
• Chromosome 9, partial trisomy 9p - mental retardation
• Chromosome 9, trisomy - Mental retardation
• Chromosome 9, trisomy 9p - mental retardation
• Chromosome 9, Trisomy 9p (Multiple Variants) - mental retardation
• Chromosome 9, trisomy 9q - mental retardation
• Chromosome 9, trisomy 9q32 - mental retardation
• Chromosome 9p deletion syndrome - mental retardation
• Chromosome 9p duplication syndrome
• Chromosome 9p tetrasomy syndrome - mental retardation
• Chromosome 9q deletion syndrome - mental retardation
• Chromosome 9q duplication - mental retardation
• Chromosome 9q duplication syndrome - mental retardation
• Chromosome 9q duplication/chromosome 9p deletion syndrome - mental retardation
• Chromosome diploid-triploid mosaicism syndrome - mental retardation
• Chromosome disorders
• Chronic Alcoholism - Teratogenic Agent - mental retardation
• Chylomicron retention disease
• Chylomicron retention disease with Marinesco-Sjogren syndrome - mental retardation
• CINCA syndrome
• Clark-Baraitser syndrome - mental retardation
• Classic galactosemia - mental retardation
• Classical pyridoxine-dependent seizures - mental retardation
• Cleft lip - palate - abnormal thumbs - microcephaly - mental retardation
• Cleft lip - palate - mental retardation - corneal opacity - mental retardation
• Cleft palate - cardiac defect - genital anomalies - ectrodactyly - mental retardation
• Cleft palate - short stature - vertebral anomalies - mental retardation
• COACH syndrome - mental retardation
• Cockayne syndrome
• CODAS (cerebral, ocular, dental, auricular, skeletal) syndrome
• Coenzyme Q 10 (CoQ10), deficiency - mental retardation
• Coenzyme Q10 deficiency
• Coffin syndrome 1
• Coffin-Lowry syndrome - mental retardation
• Coffin-Siris syndrome
• Cohen syndrome
• Cohen-Hayden syndrome - mental retardation
• Coleman Randall syndrome - mental retardation
• Collins-Sakati syndrome - mental retardation
• Coloboma chorioretinal cerebellar vermis aplasia - mental retardation
• Coloboma uveal with cleft lip palate and mental retardation - mental retardation
• Coloboma, cleft lip/palate and mental retardation syndrome - mental retardation
• Colobomatous microphthalmia - heart disease - hearing loss - mental retardation
• Colpocephaly - mental retardation
• Complete Trisomy 18 syndrome - mental retardation
• Congenital disorder of glycosylation type 1A - mental retardation
• Congenital disorder of glycosylation type 1F - mental retardation
• Congenital disorder of glycosylation type 1I - mental retardation
• Congenital disorder of glycosylation type 1K - mental retardation
• Congenital disorder of glycosylation type 1L - mental retardation
• Congenital disorder of glycosylation type 2a
• Congenital disorder of glycosylation type 2C - mental retardation
• Congenital disorder of glycosylation type 2D - mental retardation
• Congenital disorder of glycosylation type 2E - mental retardation
• Congenital disorder of glycosylation type 2G - mental retardation
• Congenital disorder of glycosylation type IIH - mental retardation
• Congenital disorder of glycosylation type X - Bombay blood group phenotype - mental retardation
• Congenital Disorders of Glycosylation - mental retardation
• Congenital Disorders of Glycosylation Type Ia - mental retardation
• Congenital heart disease - radio ulnar synostosis - mental retardation - mental retardation
• Congenital heart disease radio ulnar synostos mental retardation - mental retardation
• Congenital heart disease, ptosis, hypodontia, craniosynostosis - mental retardation
• Congenital hypoparathyroidism, seizures, growth and mental retardation and unusual facies - mental retardation
• Congenital hypothyroidism - mental retardation
• Congenital muscular dystrophy, autosomal recessive
• Congenital myotonic dystrophy - mental retardation
• Congenital Toxoplasmosis - mental retardation
• Copper poisoning
• Corneal anesthesia deafness intellectual deficit - mental retardation
• Corneal anesthesia deafness mental retardation - mental retardation
• Corneal cerebellar syndrome - mental retardation
• Corneal dystrophy - ichthyosis - microcephaly - mental retardation - mental retardation
• Corneal hypesthesia deafness intellectual deficit - mental retardation
• Cornelia de Lange syndrome - mental retardation
• Cornelia de Lange syndrome 1 - mental retardation
• Cornelia de Lange syndrome 2 - mental retardation
• Cornelia de Lange syndrome 3 - mental retardation
• Corpus callosum agenesis - mental retardation
• Corpus callosum agenesis - double urinary collecting system - mental retardation
• Corpus callosum agenesis double urinary collecting - mental retardation
• Corpus callosum agenesis double urinary collecting system and trigonocephaly - mental retardation
• Corpus callosum agenesis type 2
• Corpus callosum agenesis-neuropathy - mental retardation
• Corpus callosum dysgenesis X-linked recessive - mental retardation
• Cortada Koussef Matsumoto syndrome - mental retardation
• Cortada-Kousseff-Matsumoto syndrome - mental retardation
• Cortical dysplasia - focal epilepsy syndrome - mental retardation
• Costello syndrome
• Cote-Katsantoni syndrome - retarded mental development
• Cowden's syndrome - mental retardation
• Craniodiaphyseal dysplasia - mental retardation
• Craniodigital syndrome - mental retardation - mental retardation
• Craniofacial dysmorphism-polysyndactyly syndrome
• Craniofacial dysostosis - arthrogryposis - progeroid appearence - mild mental retardation
• Craniofacial dyssynostosis - mental retardation
• Craniofaciocardioskeletal syndrome - mild mental retardation
• Craniosynostosis - mental retardation
• Craniosynostosis - alopecia - brain defect - mental retardation
• Craniosynostosis - brachysyndactyly of hands and absence of toes - mental retardation
• Craniosynostosis - congenital heart disease - mental retardation - mental retardation
• Craniosynostosis - Dandy-Walker - Hydrocephalus - mental retardation
• Craniosynostosis exostoses nevus epibulbar dermoid - mental retardation
• Craniosynostosis mental retardation clefting syndrome - mental retardation
• Craniosynostosis radial aplasia syndrome - mental retardation
• Craniosynostosis, sagittal, with Dandy-Walker malformation and hydrocephalus - mental retardation
• Craniotelencephalic dysplasia - mental retardation
• Creatine deficiency, X-linked - mental retardation
• Cretinism athyreotic - mental retardation
• Cri du chat syndrome 5p−
• Cri-du-chat syndrome
• Crome syndrome - mental retardation
• Cross-McKusick-Breen syndrome
• Cryptorchidism - arachnodactyly - mental retardation - mental retardation
• Cumming syndrome
• Cutis verticis gyrata - mental deficit - mental retardation
• Cutis verticis gyrata mental deficiency - mental retardation
• Cystathionine beta-synthase deficiency
• Cystic fibrosis - gastritis - megaloblastic anaemia - mental retardation
• Cytochrome c oxydase deficiency, French-Canadian type - mental retardation
• Cytomegalovirus, congenital
• D ercole syndrome - mental retardation
• D-glycerate kinase deficiency
• Dandy-Walker - facial hemangioma - mental retardation
• Dandy-Walker malformation with mental retardation, macrocephaly, myopia, and brachytelephalangy - mental retardation
• Davis syndrome - mental retardation
• Davis-Lafer syndrome - mental retardation
• De Barsy syndrome
• De Grouchy Syndrome - Mental retardation
• De Lange 1 - mental retardation
• De Lange syndrome
• Deafness - epiphyseal dysplasia - short stature - mental retardation
• Deafness - hypospadias - metacarpal and metatarsal synostosis - mental retardation
• Deafness - onychodystrophy - osteodystrophy - mental retardation - mental retardation
• Deafness - skeletal dysplasia - lip granuloma - mental retardation
• Deafness, congenital onychodystrophy, recessive form - mental retardation
• Deafness-mental retardation, Martin-Probst type - mental retardation
• Deal-Barratt-Dillon syndrome - mental retardation
• Del (1) (pter-p36.3) mosaicism - mental retardation
• Del(1) (p22.3-p13.3) - mental retardation
• Del(1) (pter-p34) - mental retardation
• Del(1) (pter-p35) - mental retardation
• Del(1) (pter-p36.2) - mental retardation
• Del(1) (q25-q32) - mental retardation
• Del(1) (q32-q41) - mental retardation
• Del(1) (q41-q43) - mental retardation
• Del(1) (q42-qter) - mental retardation
• Del(1) (q44-qter) - mental retardation
• Del(1q32) - mental retardation
• Deletion 10q - mental retardation
• Deletion 11p - Mental retardation
• Deletion 11q - mental retardation
• Deletion 12p13 - mental retardation
• Deletion 13q - Mental retardation
• Deletion 13q32 - mental retardation
• Deletion 18q - Mental retardation
• Deletion 20p - Mental retardation
• Deletion 2q - Mental retardation
• Deletion 2q24 - mental retardation
• Deletion 4p - Mental retardation
• Deletion 5p - mental retardation
• Deletion 6q - Mental retardation
• Deletion 6q16 q21 - mental retardation
• Deletion 8p - mental retardation
• Deletion 8q - Mental retardation
• Deletions of chromosome 8 - mental retardation
• Delta-1-pyrroline 5-carboxylate synthetase deficiency - mental retardation
• Delta-1-pyrroline-5-carboxylate dehydrogenase deficiency - mental retardation
• Dennis cohen syndrome - mental retardation
• Dentatorubral Pallidoluysian Atrophy - mental retardation
• Dentinogenesis imperfecta - short stature - hearing loss - mental retardation - mental retardation
• Denys-Corbeel syndrome - mental retardation
• Dermatoleukodystrophy - mental retardation
• Desbuquois syndrome
• Developmental delay - hypotonia extremities hypertrophy - mental retardation
• Diabetes insipidus, diabetes mellitus, optic atrophy - mental retardation
• Diabetes insipidus, diabetes mellitus, optic atrophy, deafness, mitochondrial form - mental retardation
• Diaphragmatic hernia - exomphalos - corpus callosum agenesis - mental retardation
• Dibasic aminoaciduria 2 - mental retardation
• Dibasic aminoaciduria type 1 - mental retardation
• Dibasic aminoaciduria type 2
• DIDMOAD Syndrome, Mitochondrial form - mental retardation
• Diffuse sclerosis of Schilder
• DiGeorge syndrome - mental retardation
• Digitorenocerebral syndrome - mental retardation
• Dihydropteridine reductase deficiency
• Dihydropyrimidine dehydrogenase deficiency
• Diomedi-Bernardi-Placidi syndrome - mental retardation
• Diphenyl-hydantoin - Teratogenic Agent - mental retardation
• Distal Trisomy 11q - mental retardation
• Distal trisomy 6q - mental retardation
• Distinctive Craniofacial Features - Pterygia - Mental Retardation - mental retardation
• Dobrow syndrome - mental retardation
• Double cortex syndrome - mental retardation
• Dowling-Degos disease - mental retardation
• Down syndrome - mental retardation
• Duane anomaly - mental retardation - mental retardation
• Dubowitz syndrome
• Dup(1) (p22.1-p13.3) - mental retardation
• Dup(1) (p31-p21) - mental retardation
• Dup(1) (p31.4-p22.1) - mental retardation
• Dup(1) (q11-q25) mosaicism - mental retardation
• Dup(1) (q24-q41) - mental retardation
• Dup(1) (q25-q32) - mental retardation
• Dup(1p36.3) - mental retardation
• Duplication 10q partial - mental retardation
• Duplication 12q - Mental retardation
• Duplication 13 - mental retardation
• Duplication 18 - mental retardation
• Duplication 2p - Mental retardation
• Duplication 2q - Mental retardation
• Duplication 5p - mental retardation
• Duplication 5q - Mental retardation
• Duplication 6p - mental retardation
• Duplication 6q - Mental retardation
• Duplication 6q, partial - mental retardation
• Duplication 7p - Mental retardation
• Duplication 7q - Mental retardation
• Duplication 8p - Mental retardation
• Duplication 8q - Mental retardation
• Duplication 9p partial - mental retardation
• Dwarfism - tall vertebrae - mental retardation
• Dyggve-Melchior-Clausen dysplasia
• Dyke-Davidoff-Masson syndrome
• Dysautonomia like disorder - mental retardation
• Dysequilibrium syndrome - mental retardation
• Dysharmonic skeletal maturation - muscular fiber disproportion - mental retardation
• Dyskeratosis congenita of Zinsser-Cole-Engman - retarded mental development
• Dysmorphism - abnormal vocalization - mental retardation - mental retardation
• Dysmorphism - cleft palate - loose skin - mental retardation
• Dysosteosclerosis - progressive mental retardation
• Ectodermal dysplasia - mental retardation - central nervous system malformation - mental retardation
• Ectodermal dysplasia - mental retardation - CNS malformation - mental retardation
• Ectodermal dysplasia - neurosensory deafness - mental retardation
• Ectodermal dysplasia mental retardation syndactyly - mental retardation
• Ectodermal dysplasia, Berlin type - mental retardation
• Ectodermal dysplasia, Margarita type - mental retardation
• Ectomorphic Habitus - Severe Mental Retardation - Characteristic Face - mental retardation
• Ectopia lentis, isolated - mental retardation
• Edinburgh malformation syndrome - mental retardation
• Edward Syndrome - mental retardation
• Edwards Syndrome - Mental retardation
• EEC syndrome - mental retardation
• Ehlers-Danlos syndrome type IX - mental retardation
• Ehlers-Danlos syndrome, Beasley Cohen type - mental retardation
• Ehlers-Danlos syndrome, classic type - mental retardation
• Ehlers-Danlos syndrome, progeroid form - mental retardation
• Ehlers-Danlos syndrome, progeroid form 2 - mental retardation
• Ehlers-Danlos syndrome, X-linked - mental retardation
• Emerinopathy - mental retardation
• Emery-Dreifuss muscular dystrophy, X-linked - mental retardation
• Emery-Nelson syndrome - retarded mental development
• Encephalo cranio cutaneous lipomatosis - mental retardation
• Encephalocele anterior - mental retardation
• Encephalocele frontal - mental retardation
• Encephaloceles - mental retardation
• Encephalopathy - intracranial calcification - growth hormone deficiency - microcephaly - retinal degeneration - mild mental retardation
• Encephalopathy due to sulphite oxidase deficiency - mental retardation
• Endomyocardial fibroelastosis - mental retardation
• Engelhard-Yatziv syndrome - mental retardation
• Epidermal naevus syndrome
• Epidermal nevus - vitamin D resistant rickets - mental retardation
• Epidermolysis bullosa, late-onset, localized junctional, with mental retardation - mental retardation
• Epilepsy - mental deterioration, Finnish type - mental retardation
• Epilepsy - microcephaly - skeletal dysplasia - mental retardation
• Epilepsy - telangiectasia - mental retardation
• Epilepsy, progressive myoclonic 3 - mental retardation
• Epilepsy, pyridoxin-dependent - mental retardation
• Epilepsy, Pyridoxine-Dependent - mental retardation
• Epileptic encephalopathy, early infantile, 1 - mental retardation
• Epiphyseal dysplasia - hearing loss - dysmorphism - mental retardation
• Epiphyseal dysplasia dysmorphism camptodactyly - mental retardation
• Ethylmalonic encephalopathy
• Euhidrotic ectodermal dysplasia - mental retardation
• Facial asymetry - temporal seizures - mental retardation
• Facial asymmetry - temporal seizures - mental retardation
• Facial dysmorphism - intellectual deficit - short stature - hearing loss - mental retardation
• Facial dysmorphism - shawl scrotum - joint laxity syndrome - mental retardation
• Faciocardiorenal syndrome
• Fahr's Syndrome - mental retardation
• Familial band heterotopia - mental retardation
• Familial histiocytic reticulosis
• Familial hypertryptophanemia - mental retardation
• Familial porencephaly - mental retardation
• Fanconi anaemia
• Fanconi syndrome - mental retardation
• Fanconi-ichthyosis-dysmorphism - mental retardation
• Fanconi-Turler syndrome - mental retardation
• Fara-Chlupackova syndrome - mild mental retardation
• Farber's disease - mental retardation
• Feingold syndrome
• Fenton-Wilkinson-Toselano syndrome - mental retardation
• Fetal alcohol syndrome - Mental retardation
• Fetal aminopterin-like syndrome
• Fetal brain disruption sequence - mental retardation
• Fibromatosis gingival - hypertrichosis - mental retardation
• Filippi syndrome - physical retardation
• Fine-Lubinsky syndrome - mental retardation
• Fitzsimmons syndrome
• Fitzsimmons-McLachlan-Gilbert syndrome - mental retardation
• Floating-Harbor syndrome - mental retardation
• Focal cortical dysplasia type II - mental retardation
• Focal cortical dysplasia type IIA - mental retardation
• Focal dermal hypoplasia
• Fountain Syndrome - mental retardation
• Four X syndrome
• Fragile X syndrome - mental retardation
• Franceschini-Vardeu-Guala syndrome - mental retardation
• Franek-Bocker-Kahlen syndrome - mental retardation
• Frank-Ter Haar syndrome - mental retardation
• FRAXD - mental retardation
• Free sialic Acid storage disease - mental retardation
• Freire-Maia odontotrichomelic syndrome - mental retardation
• Freire-Maia syndrome - mental retardation
• Fried syndrome - mental retardation
• Froehlich syndrome - mental retardation
• Frontometaphyseal dysplasia
• Fryns macrocephaly - mental retardation
• Fryns Syndrome - mental retardation
• Fryns syndrome 2
• Fryns-Aftimos syndrome - mental retardation
• Fryns-Smeets-Thiry syndrome - mental retardation
• Fryns-van den Berghe syndrome
• Fucosidosis
• Fucosidosis type 1 - progressive mental retardation
• Fucosidosis type II - progressive mental retardation
• Fukuyama congenital muscular dystrophy
• Fukuyama type muscular dystrophy - mental retardation
• Fumarase deficiency
• Galactose epimerase deficiency
• Galactosemia
• Galactosemia I - mental retardation
• Galactosemia type 1
• Galactosialidosis
• Galloway syndrome - mental retardation
• Galloway-Mowat syndrome
• Gamma-aminobutyrate transaminase deficiency
• Gangliosidosis GM1, type 3
• Gangliosidosis GM3
• Gangliosidosis, generalized GM1 type 3 - mild mental retardation
• Gardner-Morrisson-Abbot syndrome - mental retardation
• Gareis-Mason syndrome
• Garret-Tripp syndrome - mental retardation
• Gaucher's disease
• Generalized gangliosidosis GM1
• Generalized lipodystrophy with mental retardation, deafness, short stature and slender bones - mental retardation
• Genetic birth defects
• Genital anomaly - cardiomyopathy - mental retardation
• Gerhardt syndrome
• Giacomini disease - mental retardation
• Giant axonal neuropathy
• Gillespie syndrome
• Global developmental delay - osteopenia - ectodermal defect - mental retardation
• Glomerulonephritis - sparse hair - telangiectases - mental retardation
• Glucose phosphate isomerase deficiency
• Glucose transport defect, blood-brain barrier - mental retardation
• Glucose transporter type 1 deficiency
• Glutamate decarboxylase deficiency - mental retardation
• Glutamate formiminotransferase deficiency
• Glutaric aciduria type 1
• Glutathione synthase deficiency
• Glutathione synthetase deficiency, severe - mental retardation
• Glycerol kinase deficiency
• Glycine decarboxylase deficiency
• Glycine encephalopathy, atypical mild form - mental retardation
• Glycine encephalopathy, classical neonatal early-onset form - mental retardation
• Glycine encephalopathy, classical neonatal form - mental retardation
• Glycogen Storage Disease IIb - formerly - mental retardation
• Glycogen storage disease type 2B - mental retardation
• Glycogen storage disease type 2B - formerly - mental retardation
• Glycogen storage disease type 6A, due to phosphorylase kinase deficiency - mental retardation
• Glycogenosis type 2 - mental retardation
• GM1 gangliosidosis, type 2
• GM2 gangliosidosis type AB
• GM2-gangliosidosis, AB variant - mental retardation
• Gms syndrome - mental retardation
• Golabi-Ito-Hall syndrome
• Goldberg syndrome - mental retardation
• Goldblatt-Wallis syndrome - mental retardation
• GOMBO syndrome
• Gonadal dysgenesis XY type associated anomalies - mental retardation
• Greig Cephalopolysyndactyly Syndrome - mental retardation
• Grix-Blankenship-Peterson syndrome - mental retardation
• Growth and mental retardation, mandibulofacial dysostosis, microcephaly, and cleft palate - mental retardation
• Growth delay - mental retardation - mandibulofacial dysostosis - microcephaly - cleft palate - mental retardation
• Growth delay due to insulin-like growth factor I deficiency - mental retardation
• Growth retardation mental retardation phalangeal hypoplasia - mental retardation
• Grubben syndrome
• GSD IIB - formerly - mental retardation
• GSD2B - formerly - mental retardation
• Gurrieri-Sammito-Bellussi syndrome - mental retardation
• Gustavson syndrome - mental retardation
• Haas-Robinson syndrome - mental retardation
• Hair defect photosensitivity mental retardation - mental retardation
• Hair defect with photosensitivity and mental retardation - mental retardation
• Hair-brain syndrome
• Halal Setton Wang syndrome - mental retardation
• Halal syndrome - mild mental retardation
• Hallervorden-Spatz disease - mental retardation
• Hanhart syndrome type IV - mental retardation
• HARD syndrome (Hydrocephalus - agyria - retinal dysplasia) - mental retardation
• Harrod Doman Keele syndrome - mental retardation
• Hartnup's disease
• Haspeslagh Fryns Muelenaere syndrome - mental retardation
• Havlikova syndrome - retarded mental development
• Hemi 3 syndrome - mental retardation
• Hemimegalencephaly - mental retardation
• Hemiplegic migraine, familial type 2 - mental retardation
• Hennekam syndrome
• Hereditary methemoglobinemia, recessive, type II - mental retardation
• Hereditary Motor and Sensory Neuropathy with Deafness, Mental Retardation and Absence of Large Myelinated Fibers - mental retardation
• Hereditary nodular heterotopia - mental retardation
• Hereditary orotic aciduria
• Hereditary sensory and autonomic neuropathy 3 - retarded mental development
• Hereditary sensory and autonomic neuropathy type 4
• Herpes, Neonatal - mental retardation
• Herpes, Neonatal - Central Nervous System Infection - mental retardation
• Herpes, Neonatal - Disseminated - mental retardation
• Herrmann-Opitz craniosynostosi - mental retardation
• Hersh-Podruch-Weisskopk syndrome - mental retardation
• Hidrotic ectodermal dysplasia
• Hischsprung disease-microcephaly-mental retardation syndrome
• Histidinaemia
• Histidinemia - mental retardation
• Histidinuria, renal tubular defect - mental retardation
• Holoprosencephaly - mental retardation
• Holoprosencephaly deletion 2p - mental retardation
• Homocarnosinase deficiency
• Homocarnosinosis - mental retardation
• Homocystinuria - mental retardation
• Homocystinuria due to cystathionine beta-synthase deficiency - mental retardation
• Homocystinuria due to defect in methylation (cbl g) - mental retardation
• Homocystinuria due to defect in methylation cbl e - mental retardation
• Hooft disease - mental retardation
• Hordnes-Engebretsen-Knudtson syndrome - mental retardation
• Hornova-Dlurosova syndrome - mental retardation
• Howard-Young syndrome - mental retardation
• Hoyeraal-Hreidarsson syndrome - mental retardation
• Hunter-Carpenter-Macdonald syndrome - mental retardation
• Hunter-Fraser syndrome - mental retardation
• Hunter-Macpherson syndrome - mental retardation
• Hunter-McAlpine syndrome - mental retardation
• Hyde-Forster-Mccarthy-Berry syndrome - mental retardation
• Hydranencephaly - mental retardation
• Hydrocephalus
• Hydrocephalus - costovertebral dysplasia - Sprengel anomaly - mental retardation
• Hydrocephalus due to congenital stenosis of aqueduct of sylvius - mental retardation
• Hydrocephalus obesity hypogonadism - mental retardation
• Hydroxykynureninuria - mental retardation
• Hyperammonemia - hypoornithinemia - hypocitrullinemia - hypoargininemia - hypoprolinemia - mental retardation
• Hyperimidodipeptiduria - mental retardation
• Hypermethioninemia due to S-adenosylhomocysteine hydrolase deficiency - mental retardation
• Hyperornithinaemia-hyperammonaemia-homocitrullinuria syndrome
• Hyperornithinemia-hyperammonemia-homocitrullinuria syndrome - mental retardation
• Hyperprolinemia type 2 - mental retardation
• Hypertelorism - esophageal abnormalities - hypospadias - mental retardation
• Hypertelorism and tetralogy of Fallot - mild mental retardation
• Hypertelorism with esophageal abnormality and hypospadias - mental retardation
• Hypertrichosis brachydactyly obesity and mental retardation - mental retardation
• Hypertrichosis, hyperkeratosis, mental retardation, and distinctive facial features - mental retardation
• Hypertrichotic osteochondrodysplasia - mental retardation
• Hypertryptophanemia - mental retardation
• Hypobetalipoproteinaemia - ataxia - hearing loss - mental retardation
• Hypochondroplasia
• Hypogonadism - mitral valve prolapse - mental retardation - mental retardation
• Hypomandibular faciocranial dysostosis - mental retardation
• Hypomelanosis of Ito - mental retardation
• Hypomyelination - congenital cataract - mental retardation
• Hypomyelination and congenital cataract - mental retardation
• Hypoparathyroidism - short stature - mental retardation - mental retardation
• Hypoparathyroidism familial isolated - mental retardation
• Hypospadias - hypertelorism - mental retardation
• Hypothyroidism - cleft palate - mental retardation
• Hypothyroidism due to iodide transport defect - mental retardation
• Hypothyroidism postaxial polydactyly mental retardation - mental retardation
• Hypothyroidism, congenital
• I-cell disease
• IBIDS syndrome - mental retardation
• ICF syndrome - mental retardation
• Ichthyosis - alopecia - eclabion - ectropion - mental retardation - mental retardation
• Ichthyosis - deafness - mental retardation - skeletal anomaly - mental retardation
• Ichthyosis - mental retardation, Devriendt type - mental retardation
• Ichthyosis mental retardation asymptomatic spasticity - mental retardation
• Ichthyosis mental retardation dwarfism renal impairment - mental retardation
• Idaho syndrome - mental retardation
• Idiopathic basal ganglia calcification, childhood onset - mental retardation
• Iduronate sulphatase deficiency
• Illum syndrome - mental retardation
• Iminodipeptiduria
• Immunodeficiency with short limb dwarfism - mental retardation
• Inborn amino acid metabolism disorder - mental retardation
• Inborn urea cycle disorder - mental retardation
• Incontinentia pigmenti - mental retardation
• Infant Cytomegalic virus - mental retardation
• Infantile axonal neuropathy - mental retardation
• Infantile multisystem inflammatory disease - mental retardation
• Infantile Spasms - mental retardation
• Infantile spasms - broad thumbs - mental retardation
• Infections contracted at birth
• Insensitivity to pain with anhidrosis - mild mental retardation
• Intellectual deficit - cataracts - calcified pinnae - myopathy - mental retardation
• Intellectual deficit - multiple anomalies - mental retardation
• Intellectual deficit - short stature - microcephaly - eye anomalies - mental retardation
• Intrauterine infections - mental retardation
• Intraventricular haemorrhage
• Iris coloboma, macrocephaly, agenesis of the corpus callosum, brachydactyly and mental retardation - mental retardation
• Ischiadic hypoplasia - renal dysfunction - immunodeficiency - mental retardation
• Jackson-Weiss syndrome
• Jacobsen syndrome - mental retardation
• Jaffe-Campanacci syndrome
• Jaffer-Beighton syndrome - mental retardation
• Jeune syndrome - mental retardation
• Johanson-Blizzard syndrome
• Jorgenson-Lenz syndrome - mental retardation
• Joubert syndrome - mental retardation
• Juberg-Hayward syndrome - mental retardation
• Jung-Wolff-Back-Stahl syndrome - mental retardation
• Kabuki make-up syndrome
• Kalam-Hafeez syndrome - mental retardation
• Kaler-Garrity-Stern syndrome - mental retardation
• Karandikar-Maria-Kamble syndrome - mental retardation
• Katsantoni-Papadakou-Lagoyanni syndrome - mental retardation
• KBG Syndrome - mental retardation
• Kennerknecht syndrome - mental retardation
• Kennerknecht-Sorgo-Oberhoffer syndrome - mental retardation
• Kennerknecht-Vogel syndrome - mental retardation
• Keratosis palmoplantaris - corneal dystrophy - mental retardation
• Keutel syndrome 2 - retarded mental development
• Kifafa seizure disorder - mental retardation
• Kleeblattschaedel syndrome - mental retardation
• Klinefelter syndrome
• Klinefelter variant
• Kohlschutter syndrome
• Koone-Rizzo-Elias syndrome - mental retardation
• Kosztolanyi syndrome - mental retardation
• Kotzot-Richter syndrome - mild mental retardation
• Kramer-Pollnow disease - mental retardation
• Krause syndrome - mental retardation
• Krause-Kivlin syndrome - mental retardation
• Krause-van Schooneveld-Kivlin syndrome
• Kurczynski-Casperson syndrome - mental retardation
• L1 Syndrome - mental retardation
• Lactic acidosis congenital infantile - mental retardation
• Lactic Acidosis, Fatal Infantile - mental retardation
• Langer-Giedion syndrome
• Lathosterolosis - mental retardation
• Laurence-Moon syndrome - mental retardation
• Lead poisoning - mental retardation
• Learning disorders
• Leigh syndrome - mental retardation
• Leigh syndrome, French Canadian type - mental retardation
• Leigh syndrome, Saguenay-Lac-St. Jean type - mental retardation
• Lennox-Gastaut syndrome - mental retardation
• Lenz microphthalmia syndrome - physical retardation
• Lenz-Majewski hyperostosis syndrome
• Leprechaunism - mental retardation
• Lesch-Nyhan syndrome - Mental retardation
• Leschke-Ullmann syndrome - physical retardation
• Leucinosis - mental retardation
• Leukomalacia - mental retardation
• Leukomelanoderma - Infantalism - Mental Retardation - Hypodontia - Hypotrichosis - mental retardation
• Leukomelanoderma, infantilism, mental retardation, hypodontia, hypotrichosis - mental retardation
• Levic-Stefanovic-Nikolic syndrome - mental retardation
• Limb deficiencies distal micrognathia - mental retardation
• Lindsay-Burn syndrome - mental retardation
• Lindstrom syndrome - mental retardation
• Lipidosis with triglyceride storage disease - mental retardation
• Lipoamide dehydrogenase deficiency - mental retardation
• Lipoid proteinosis of Urbach and Wiethe - mental retardation
• Lissencephaly - immunodeficiency - mental retardation
• Lissencephaly 3 - mental retardation
• Lissencephaly syndrome type 1 - mental retardation
• Lissencephaly type 1, due to LIS 1 anomalies - mental retardation
• Lissencephaly with cerebellar hypoplasia - mental retardation
• Lissencephaly, type 1, X-linked - mental retardation
• Lissencephaly, X linked - agenesis of the corpus callosum - genital anomalies - mental retardation
• Lissencephaly, X-linked 2 - mental retardation
• Loeys-Dietz syndrome - mental retardation
• Lopes-Marques de Faria syndrome - mental retardation
• Low birth weight - dwarfism - dysgammaglobulinemia - mental retardation
• Lowe oculocerebrorenal syndrome - mental retardation
• Lowe syndrome
• Lowry-MacLean syndrome - mental retardation
• Lowry-Wood syndrome - mental retardation
• Lujan-Fryns syndrome - mental retardation
• Lundberg II syndrome - mental retardation
• Lymphangiectasies and lymphedema Hennekam type - mental retardation
• Lymphoedema - lymphangiectasia - mental retardation - mental retardation
• Lysine: alpha-ketoglutarate reductase deficiency
• Lysosomal glycogen storage disease with normal acid maltase activity - mental retardation
• MacDermot-Winter syndrome - mental retardation
• Macrocephaly - mental retardation - facial dysmorphism - mental retardation
• Macrocephaly - short stature - paraplegia - mental retardation
• Macrocephaly mesodermal hamartoma spectrum - mental retardation
• Macrogyria, pseudobulbar palsy and mental retardation - mental retardation
• Macules hereditary congenital hypopigmented hyperpigmented - mental retardation
• Macules, hereditary, congenital hypopigmented and hyperpigmented - mental retardation
• Malformations in neuronal migration - mental retardation
• Malnutrition
• Malonyl-CoA decarboxylase deficiency
• Malpuech facial clefting syndrome - mental retardation
• Mannosidosis, alpha B lysosomal - mental retardation
• Maple syrup urine disease
• Marden-Walker Syndrome - mental retardation
• Marfanoid - mental retardation syndrome autosomal - mental retardation
• Marinesco-Sjogren syndrome - mental retardation
• Marinesco-Sjogren-Garland syndrome
• Marinesco-Sjogren-like syndrome (MSLS) - mental retardation
• Marinesco-Sjögren I - retarded mental development
• Maroteaux-Fonfria syndrome - mental retardation
• Marshall-Smith-Weaver syndrome
• Martsolf syndrome
• MASA Syndrome - mental retardation
• Massa-Casaer-Ceulemans syndrome - mental retardation
• Mastocytosis - short stature - hearing loss - mental retardation
• Mastocytosis, cutaneous, with short stature, conductive hearing loss and microtia - mental retardation
• Maternal cytomegalovirus
• Maternal drug use
• Maternal rubella
• Maternal syphilis
• Maternal toxoplasmosis
• Maternally Inherited Leigh Syndrome - mental retardation
• Matsoukas syndrome - mental retardation
• Matsoukas-Liarikos-Giannika syndrome - mental retardation
• McDonough syndrome - mental retardation
• McDowall syndrome - mental retardation
• McLain-Dekaban syndrome - mental retardation
• Meckel-Gruber syndrome
• Medrano-Roldan syndrome - mental retardation
• Megalencephalic leukoencephalopathy with subcortical cysts - mental retardation
• Megalencephaly - mental retardation
• Megalencephaly - polymicrogyria - post-axial polydactyly - hydrocephalus - mental retardation
• Megalocornea mental retardation syndrome - mental retardation
• Megarbane syndrome - mental retardation
• Meinecke syndrome - mental retardation
• MELAS
• Meleda Disease - mental retardation
• Meningitis - mental retardation
• Meningococcal A - Mental retardation
• Meningococcal B - Mental retardation
• Meningococcal C - Mental retardation
• Meningococcal disease - mental retardation
• Meningoencephalocele - mental retardation
• Menke disease
• Mental retardation - anophthalmia - craniosynostosis - mental retardation
• Mental retardation - arachnodactyly - hypotonia - telangiectasia - mental retardation
• Mental retardation - blepharophimosis - obesity - web neck - mental retardation
• Mental retardation - coloboma - slimness - mental retardation
• Mental retardation - contractural arachnodactyly - mental retardation
• Mental retardation - epilepsy - mental retardation
• Mental retardation - epilepsy - bulbous nose - mental retardation
• Mental retardation - epilepsy, X-linked - mental retardation
• Mental retardation - epileptic seizures - hypogonadism - hypogenitalism -microcephaly - obesity - mental retardation
• Mental retardation - gynecomastia - obesity, X-linked - mental retardation
• Mental retardation - hip luxation - G6PD variant - mental retardation
• Mental retardation - hypocupremia - hypobetalipoproteinemia - mental retardation
• Mental retardation - hypotonia - skin hyperpigmentation - mental retardation
• Mental retardation - hypotonic facies syndrome, X-linked, 1 - mental retardation
• Mental retardation - macrocephaly - coarse facies - hypotonia - mental retardation
• Mental retardation - microcephaly - phalangeal - facial abnormalities - mental retardation
• Mental retardation - multiple nevi - mental retardation
• Mental retardation - myopathy - short stature - endocrine defect - mental retardation
• Mental retardation - nasal hypoplasia - obesity - genital hypoplasia - mental retardation
• Mental retardation - osteosclerosis - mental retardation
• Mental Retardation - Pterygia - Shortness - Distinctive Facial Appearance - mental retardation
• Mental retardation - short stature - absent phalanges - mental retardation
• Mental retardation - short stature - cleft palate - unusual facies - mental retardation
• Mental retardation - short stature - deafness - genital - mental retardation
• Mental retardation - short stature - hand contractures - genital anomalies - mental retardation
• Mental retardation - short stature - heart and skeletal anomalies - mental retardation
• Mental retardation - short stature - microcephaly - eye anomalies - mild mental retardation
• Mental retardation - short stature - scoliosis - mental retardation
• Mental retardation - short stature - unusual facies - mental retardation
• Mental retardation - short stature, Bombay phenotype - mental retardation
• Mental retardation - skeletal dysplasia - abducens palsy - mental retardation
• Mental retardation - spasticity - ectrodactyly - mental retardation
• Mental retardation athetosis microphthalmia - mental retardation
• Mental retardation cataracts calcified pinnae myopathy - mental retardation
• Mental retardation microcephaly unusual facies - mental retardation
• Mental retardation progressive spasticity - mental retardation
• Mental retardation progressive spasticity, X-linked - mental retardation
• Mental retardation psychosis macroorchidism - mental retardation
• Mental retardation sparse hair brachydactyly - mental retardation
• Mental retardation syndrome, Belgian type - mental retardation
• Mental retardation unusual facies ampola type - mental retardation
• Mental retardation X-linked - psychosis - macroorchidism - mental retardation
• Mental retardation X-linked dysmorphism - mental retardation
• Mental retardation X-linked short stature obesity - mental retardation
• Mental retardation X-linked syndromic 7 - mental retardation
• Mental retardation X-linked, South African type - mental retardation
• Mental retardation, autosomal recessive, 1 - mental retardation
• Mental retardation, autosomal recessive, 10 - mental retardation
• Mental retardation, autosomal recessive, 11 - mental retardation
• Mental retardation, autosomal recessive, 2 - mental retardation
• Mental retardation, autosomal recessive, 3 - mental retardation
• Mental retardation, autosomal recessive, 4 - mental retardation
• Mental retardation, autosomal recessive, 5 - mental retardation
• Mental retardation, autosomal recessive, 6 - mental retardation
• Mental retardation, autosomal recessive, 7 - mental retardation
• Mental retardation, autosomal recessive, 8 - mental retardation
• Mental retardation, autosomal recessive, 9 - mental retardation
• Mental retardation, Behavior disturbance, Sensorineural hearing loss - mental retardation
• Mental retardation, Buenos Aires type - mental retardation
• Mental retardation, epileptic seizures, hypogonadism and hypogenitalism, microcephaly, and obesity - mental retardation
• Mental retardation, keratoconus, febrile seizures, and sinoatrial block - mental retardation
• Mental retardation, macrocephaly, short stature and craniofacial dysmorphism - mental retardation
• Mental retardation, Microcephaly, Epilepsy and Ataxia Syndrome - mental retardation
• Mental retardation, Mietens-Weber type - mental retardation
• Mental retardation, non-syndromic, autosomal recessive - mental retardation
• Mental retardation, Smith-Fineman-Myers type - mental retardation
• Mental retardation, unexplained - mental retardation
• Mental retardation, X linked - precocious puberty - obesity - mental retardation
• Mental Retardation, X-Linked - mental retardation
• Mental retardation, X-linked - acromegaly - hyperactivity - mental retardation
• Mental retardation, X-linked - borderline MAOA metabolism anomaly - mental retardation
• Mental retardation, X-linked - choreoathesis - abnormal behavior - mental retardation
• Mental retardation, X-linked - corpus callosum agenesis - spastic quadriparesis - mental retardation
• Mental retardation, X-linked - craniofacial dysmorphology - epilepsy - ophthalmoplegia - cerebellar atrophy - mental retardation
• Mental retardation, X-linked - cubitus valgus - typical face - mental retardation
• Mental retardation, X-linked - dystonia - dysarthria - mental retardation
• Mental retardation, X-linked - epilepsy - progressive joint contractures - typical face - mental retardation
• Mental retardation, X-linked - gynecomastia - obesity - mental retardation
• Mental retardation, X-linked - hypogonadism - ichthyosis - obesity - short stature - mental retardation
• Mental retardation, X-linked - hypotonia - facial dysmorphism - aggressive behavior - mental retardation
• Mental retardation, X-linked - hypotonic face - mental retardation
• Mental retardation, X-linked - macrocephaly - macro-orchidism - mental retardation
• Mental retardation, X-linked - seizures - psoriasis - mental retardation
• Mental retardation, X-linked recessive - macrocephaly - ciliary dysfunction - mental retardation
• Mental retardation, X-linked syndromic 12 - mental retardation
• Mental retardation, X-linked syndromic 14 - mental retardation
• Mental retardation, X-linked with brachydactyly and macroglossia - mental retardation
• Mental retardation, X-linked, 1 - mental retardation
• Mental retardation, X-linked, 12 - mental retardation
• Mental retardation, X-linked, 14 - mental retardation
• Mental retardation, X-linked, 16 - mental retardation
• Mental retardation, X-linked, 17 - mental retardation
• Mental retardation, X-linked, 2 - mental retardation
• Mental retardation, X-linked, 20 - mental retardation
• Mental retardation, X-linked, 21 - mental retardation
• Mental retardation, X-linked, 23 - mental retardation
• Mental retardation, X-linked, 29 - mental retardation
• Mental retardation, X-linked, 3 - mental retardation
• Mental retardation, X-linked, 30 - mental retardation
• Mental retardation, X-linked, 36 - mental retardation
• Mental retardation, X-linked, 42 - mental retardation
• Mental retardation, X-linked, 43 - mental retardation
• Mental retardation, X-linked, 45 - mental retardation
• Mental retardation, X-linked, 46 - mental retardation
• Mental retardation, X-linked, 49 - mental retardation
• Mental retardation, X-linked, 50 - mental retardation
• Mental retardation, X-linked, 52 - mental retardation
• Mental retardation, X-linked, 53 - mental retardation
• Mental retardation, X-linked, 54 - mental retardation
• Mental retardation, X-linked, 59 - mental retardation
• Mental retardation, X-linked, 63 - mental retardation
• Mental retardation, X-linked, 72 - mental retardation
• Mental retardation, X-linked, 73 - mental retardation
• Mental retardation, X-linked, 77 - mental retardation
• Mental retardation, X-linked, 78 - mental retardation
• Mental retardation, X-linked, 81 - mental retardation
• Mental retardation, X-linked, 82 - mental retardation
• Mental retardation, X-linked, 84 - mental retardation
• Mental retardation, X-linked, 9 - mental retardation
• Mental retardation, X-linked, 91 - mental retardation
• Mental retardation, X-linked, 93 - mental retardation
• Mental retardation, X-linked, 94 - mental retardation
• Mental retardation, X-linked, Armfield type - mental retardation
• Mental retardation, X-linked, Brooks type - mental retardation
• Mental retardation, X-linked, Brunner type - mental retardation
• Mental retardation, X-linked, Cabezas type - mental retardation
• Mental retardation, X-linked, Cantagrel type - mental retardation
• Mental retardation, X-linked, nonspecific - mental retardation
• Mental retardation, X-linked, Pai type - mental retardation
• Mental retardation, X-linked, Raynaud type - mental retardation
• Mental retardation, X-linked, Reish type - mental retardation
• Mental retardation, X-linked, Seemanova type - mental retardation
• Mental retardation, X-linked, Shrimpton type - mental retardation
• Mental retardation, X-linked, Siderius type - mental retardation
• Mental retardation, X-linked, Stevenson type - mental retardation
• Mental retardation, X-linked, Stoll type - mental retardation
• Mental retardation, X-linked, syndromic 11 - mental retardation
• Mental retardation, X-linked, syndromic type 11 - mental retardation
• Mental retardation, X-linked, syndromic, due to JARID1C mutation - mental retardation
• Mental retardation, X-linked, Turner type - mental retardation
• Mental retardation, X-linked, Vitale type - mental retardation
• Mental retardation, X-linked, with cerebellar hypoplasia and distinctive facial appearance - mental retardation
• Mental retardation, X-linked, with isolated growth hormone deficiency - mental retardation
• Mental retardation, X-linked, Zorick type - mental retardation
• Mental retardation-polydactyly-uncombable hair - mental retardation
• Mercury - Teratogenic Agent - mental retardation
• Mercury poisoning - consumption of contaminated fish - mental retardation
• Mercury poisoning - Folk Remedies - mental retardation
• Mesomelia radial hypoplasia bifid thumb unusual facies - mental retardation
• Metabolic disorders - mental retardation
• Metaphyseal dysostosis mental retardation conductive deafness - mental retardation
• Methionine malabsorption
• Methionine malabsorption syndrome - mental retardation
• Methionine synthase deficiency
• Methylcobalamin deficiency, cbl E complementation type - mental retardation
• Methylenetetrahydrofolate reductase deficiency - mental retardation
• Methylmalonic acidemia - homocystinuria - mental retardation
• Methylmalonic aciduria - homocystinuria - mental retardation
• Methylmalonic aciduria type 2
• Methylmalonicaciduria with homocystinuria, cobalamin F - mental retardation
• Methylmalonicaciduria, vitamin B12 unresponsive, mut - - mental retardation
• Methylmercury - Teratogenic Agent - mental retardation
• Mevalonate kinase deficiency
• Michelin tyre baby syndrome - mental retardation
• Michels syndrome
• Mickleson syndrome - mental retardation
• Micrencephaly corpus callosum agenesis - mental retardation
• Micro syndrome - mental retardation
• Microbrachycephaly - ptosis - cleft lip - mental retardation
• Microcephalic osteodysplastic primordial dwarfism types 1 and 3 - mental retardation
• Microcephalic primordial dwarfism, Toriello type - mental retardation
• Microcephaly - mental retardation
• Microcephaly - cervical spine fusion anomalies - mild mental retardation
• Microcephaly - deafness syndrome - mental retardation
• Microcephaly - glomerulonephritis - Marfanoid habitus - mental retardation
• Microcephaly - hypergonadotropic hypogonadism - short stature - mental retardation
• Microcephaly - mental retardation - retinopathy - mental retardation
• Microcephaly - mental retardation - spasticity - epilepsy - mental retardation
• Microcephaly - mesobrachyphalangy - tracheoesophageal fistula syndrome - mental retardation
• Microcephaly - microphthalmia - ectrodactyly of lower limbs - prognathism - mental retardation
• Microcephaly - microphthalmos - blindness - mental retardation
• Microcephaly - oculo-digito-esophageal-duodenal syndrome (MODED) - mild mental retardation
• Microcephaly - pontocerebellar hypoplasia - dyskinesia - mental retardation
• Microcephaly - seizures - mental retardation - heart disorders - mental retardation
• Microcephaly - sparse hair - mental retardation - seizures - mental retardation
• Microcephaly brachydactyly kyphoscoliosis - mental retardation
• Microcephaly brain defect spasticity hypernatremia - mental retardation
• Microcephaly immunodeficiency lymphoreticuloma - mental retardation
• Microcephaly nonsyndromal - mental retardation
• Microcephaly with spastic quadriplegia - mental retardation
• Microcephaly, hiatal hernia and nephrotic syndrome - mental retardation
• Microcephaly, holoprosencephaly, and intrauterine growth retardation - mental retardation
• Microcephaly, primary autosomal recessive - mental retardation
• Microcephaly, primary autosomal recessive, 1 - mental retardation
• Microcephaly, primary autosomal recessive, 2 - mental retardation
• Microcephaly, primary autosomal recessive, 3 - mental retardation
• Microcephaly, primary autosomal recessive, 4 - mental retardation
• Microcephaly, primary autosomal recessive, 5 - mental retardation
• Microcephaly, primary autosomal recessive, 6 - mental retardation
• Microdeletion 3q29 - mental retardation
• Microencephaly - mental retardation
• Microgastria short stature diabetes - mental retardation
• Micromelic dwarfism, Fryns type - mild mental retardation
• Microphthalmia - ankyloblepharon - mental retardation - mental retardation
• Microphthalmia - camptodactyly - mental retardation - mental retardation
• Microphthalmia - mental deficiency - mental retardation
• Microphthalmia and mental deficiency - mental retardation
• Microphthalmia syndromic, type 10 - mental retardation
• Microphthalmia syndromic, type 4 - mental retardation
• Microphthalmia syndromic, type 8 - mental retardation
• Microphthalmia, Lentz type - physical retardation
• Microphthalmia, syndromic 1 - physical retardation
• Microphthalmia, syndromic 7 - mental retardation
• Microphthalmia-dermal aplasia-sclerocornea syndrome
• Midface hypoplasia, corneal clouding, subvalvular aortic stenosis and mental and somatic retardation - mental retardation
• Mietens syndrome - mental retardation
• Mild citrullinemia - mental retardation
• Miles-Carpenter X-linked mental retardation syndrome - mental retardation
• Miller-Dieker syndrome
• Mirhosseini-Holmes-Walton syndrome
• Mitochondrial encephalomyopathy - aminoacidopathy - mental retardation
• Mobius syndrome - Mental retardation
• Mohr syndrome - mental retardation
• Mohr-Tranebjaerg syndrome
• Molybdenum cofactor deficiency
• MOMO syndrome - mental retardation
• Monoamine oxidase A (MAOA) deficiency
• Monoamine oxidase A deficiency - mental retardation
• Monosomy 12p13 - mental retardation
• Monosomy 13q32 - mental retardation
• Monosomy 1p36 - mental retardation
• Monosomy 20p - Mental retardation
• Monosomy 8q12 21 - mental retardation
• Monosomy 8q21 q22 - mental retardation
• Montefiore syndrome - mental retardation
• MORM syndrome - mental retardation
• Mowat-Wilson syndrome - mental retardation
• MRXS-Christianson - mental retardation
• MRXS9 - mental retardation
• Mucolipidoses - mental retardation
• Mucolipidosis III - mild mental retardation
• Mucolipidosis IV
• Mucolipidosis type 4 - mental retardation
• Mucopolysaccharidoses - mental retardation
• Mucopolysaccharidosis type 2 Hunter syndrome- severe form - mental retardation
• Mucopolysaccharidosis type 7 Sly syndrome - mental retardation
• Mucopolysaccharidosis type I Hurler syndrome - mental retardation
• Mucopolysaccharidosis VII
• Mucosulfatidosis
• Muller-Barth-Menger syndrome - mental retardation
• Multifocal heterotopia - mental retardation
• Multiple carboxylase deficiency, propionic acidemia - mental retardation
• Multiple congenital anomalies - mental retardation - growth failure and cleft lip/ palate - mental retardation
• Multiple endocrine abnormalities - adenylyl cyclase dysfunction - mild mental retardation
• Multiple pterygium syndrome - mental retardation
• Multiple synostosis syndrome - mental retardation
• Muscle phosphoglycerate kinase deficiency - mental retardation
• Muscle-eye-brain disease
• Muscle-eye-brain syndrome - mental retardation
• Muscular dystrophy - white matter spongiosis - mental retardation
• Muscular dystrophy, congenital, type 1C - mental retardation
• Muscular dystrophy, Duchenne and Becker type - mental retardation
• Muscular dystrophy, limb-girdle - mental retardation - mental retardation
• Muscular dystrophy, limb-girdle, autosomal recessive, type 2K - mental retardation
• Myhre syndrome - mental retardation
• Myhre-Ruvalcaba-Graham syndrome - mental retardation
• Myopathy - growth and mental retardation - hypospadias - mental retardation
• Myopathy - growth delay - mental retardation - hypospadias - mental retardation
• Myopathy and diabetes mellitus - mental retardation
• Myopathy with lactic acidosis and sideroblastic anemia - mental retardation
• Myotonic dystrophy
• Myxedema - mental dullness
• N syndrome - mental retardation
• N-acetyl glutamate synthetase deficiency - mental retardation
• NADH-dependent methemoglobin reductase deficiency
• Nakajo syndrome - mental retardation
• Nakajo-Nishimura syndrome - mental retardation
• Narrow oral fissure - short stature - cone-shaped epiphyses - mental retardation
• Neonatal ALD - mental retardation
• Nephroblastomatosis - fetal ascites - macrosomia - wilms tumor - mental retardation
• Nephroblastomatosis, fetal ascites, macrosomia and Wilms tumor - mental retardation
• Nephrogenic diabetes insipidus - mental retardation
• Nephrosis neuronal dysmigration Syndrome - mental retardation
• Neuhauser syndrome
• Neural tube defects
• Neuraminidase deficiency - mental retardation
• Neuroaxonal dystrophy - renal tubular acidosis - mental retardation
• Neuroaxonal dystrophy, infantile - progressive mental retardation
• Neurodegenerative syndrome, X-linked, Bertini type - mental retardation
• Neurodegenerative syndrome, X-linked, Hamel type - mental retardation
• Neuroectodermal endocrine syndrome - mild mental retardation
• Neurofaciodigitorenal syndrome - mental retardation
• Neurofibromatosis type 1
• Neurofibromatosis-Noonan syndrome - mental retardation
• Neuronal Migration Disorders - mental retardation
• Neuropathy motor sensory type 2 deafness mental retardation - mental retardation
• Neuropathy, Hereditary Sensory, Type IV - mild mental retardation
• Nguyen syndrome - mental retardation
• Nicolaides-Baraitser syndrome - mental retardation
• Niemann-Pick disease - mental retardation
• Night blindness - skeletal anomalies - unusual facies - mental retardation
• Nijmegen Breakage Syndrome - mental retardation
• Nijmegen chromosome breakage syndrome
• Nivelon-Nivelon-Mabille syndrome - mental retardation
• NOMID syndrome - mental retardation
• Non-ketotic hyperglycinemia L protein deficiency
• Non-ketotic hyperglycinemia type 3
• Non-lissencephalic cortical dysplasia - mental retardation
• Nonbullous congenital ichthyosiform erythroderma
• Noonan Syndrome - mental retardation
• Noonan syndrome 3 - mental retardation
• Noonan's syndrome
• Norrie's disease
• Nyssen-Van Bogaert-Meyer syndrome - mental retardation
• Obesity, hypothyroidism, craniosynostosis, cardial hypertrophy, colitis and intellectual deficiency - mental retardation
• Occipital horn syndrome
• Oculocerebral hypopigmentation syndrome, type Preus - mental retardation
• Oculocerebral syndrome with hypopigmentation - mental retardation
• Oculocerebrocutaneous syndrome
• Oculocutaneous tyrosinemia - mental retardation
• Oculodental syndrome - mental retardation
• Oculodigitoesophagoduodenal syndrome - mild mental retardation
• Oculopalatocerebral syndrome - mental retardation
• Oculopalatoskeletal syndrome - mental retardation
• Odontoonychodermal dysplasia - mild mental retardation
• OFD syndrome type 8 - mental retardation
• OFD syndrome type IX - mental retardation
• Ohdo blepharophimosis syndrome
• Ohtahara syndrome - mental retardation
• Oliver syndrome - mental retardation
• Onychodystrophy - deafness - mental retardation
• Onychotrichodysplasia and neutropenia - mental retardation
• Ophthalmoplegia, progressive external - scoliosis - mild mental retardation
• Opitz G Syndrome - mental retardation
• Opitz G/BBB Syndrome - mental retardation
• Opitz G/BBB syndrome, Autosomal dominant - mental retardation
• Opitz G/BBB Syndrome, type I - mental retardation
• Opitz G/BBB Syndrome, Type II - mental retardation
• Opitz G/BBB Syndrome, X-linked - mental retardation
• Opitz syndrome , X-linked - mental retardation
• Opitz trigonocephaly syndrome
• Opitz-Frias syndrome
• Opitz-Kaveggia syndrome
• Opthalmo acromelic syndrome - mental retardation
• Opthalmoplegia - mental retardation - lingua scrotalis - mental retardation
• Opthalmoplegia progressive external scoliosis - mental retardation
• Optic atrophy 2 - mental retardation
• Oral facial digital syndrome, type 4 - mental retardation
• Oral-facial-digital syndrome type 3
• Ornithine carbamyltransferase deficiency
• Ornithine transcarbamylase (OTC) Deficiency - mental retardation
• Orofaciodigital syndrome type 1 - mental retardation
• Orotic aciduria hereditary - mental retardation
• Orotic aciduria purines-pyrimidines - mental retardation
• Oroticaciduria 1 - mental retardation
• Orotidylic decarboxylase deficiency - mental retardation
• Ossified Ear cartilages with Mental deficiency, Muscle Wasting and Bony Changes - mental retardation
• Osteochondrodysplatic dwarfism - deafness - retinitis pigmentosa - mental retardation
• Osteopathia striata with cranial sclerosis
• Osteopetrosis - renal tubular acidosis - mental retardation
• Osteopetrosis lethal - mental retardation
• Osteopetrosis with renal tubular acidosis - mental retardation
• Osteoporosis - macrocephaly - blindness - joint hyperlaxity - mental retardation
• Osteoporosis - macrocephaly - mental retardation - blindness - mental retardation
• Osteoporosis-pseudoglioma syndrome
• Otoonychoperoneal syndrome - mild mental retardation
• Otopalatodigital syndrome type 2
• Otospondylomegaepiphyseal dysplasia - mental retardation
• Ovarioleukodystrophy - mental retardation
• Pachygyria - mental retardation - seizures - mental retardation
• Pachygyria, frontotemporal - mental retardation
• Paine syndrome - retarded mental development
• Palant cleft palate syndrome - retarded mental development
• Pallister Killian Mosaic Syndrome - mental retardation
• Pallister Mosaic Syndrome Tetrasomy 12p - mental retardation
• Paris-Trousseau thrombocytopenia - mental retardation
• Partial 7p Monosomy - mental retardation
• Partial lissencephaly - mental retardation
• Partial Trisomy 18 Syndrome - mental retardation
• Partington X-linked mental retardation syndrome - mental retardation
• Passos-Bueno syndrome - mental retardation
• Patau syndrome - Mental retardation
• Patella hypoplasia - mental retardation - mental retardation
• Patterson pseudoleprechaunism syndrome - mental retardation
• Patterson-Stevenson syndrome - mental retardation
• Pectus excavatum macrocephaly dysplastic nails - mental retardation
• Pericardium absent - mental retardation - short stature - mental retardation
• Periodic hyperlysinemia
• Perisylvian syndrome - mental retardation
• Periventricular laminar heterotopia - mental retardation
• Peroxisomal acyl-CoA oxidase deficiency
• Petit-Fryns syndrome - mental retardation
• Pettigrew syndrome
• Pfeiffer syndrome Type 3 - mental retardation
• Pfeiffer-Mayer syndrome - mental retardation
• Pfeiffer-Tietze-Welte syndrome - mental retardation
• Phacomatosis pigmentokeratotica - mild mental retardation
• Phenobarbital antenatal infection - mental retardation
• Phenylalanine hydroxylase deficiency
• Phenylketonuria - mental retardation
• Phenylketonuria - Teratogenic Agent - mental retardation
• Phenylketonuria type 2 - mental retardation
• Phillips-Griffiths syndrome - mental retardation
• Phosphoglycerate kinase 1 deficiency - mental retardation
• Phosphoribosylpyrophosphate synthetase deficiency - mental retardation
• Phosphoribosylpyrophosphate synthetase superactivity - mental retardation
• PIBIDS syndrome - mental retardation
• Pili torti - developmental delay - neurological abnormalities - mental retardation
• Pilo dento ungular dysplasia - microcephaly - mental retardation
• Pilotto syndrome - mental retardation
• Pitt-Hopkins syndrome - mental retardation
• Pitt-Rogers-Danks syndrome - mental retardation
• Piussan-Lenaert-Mathieu syndrome - mental retardation
• Plum syndrome - mental retardation
• Pneumococcal meningitis - Mental retardation
• Poikilodermatomyositis - mental retardation - mental retardation
• Pollitt syndrome - mental retardation
• Polydactyly cleft lip palate psychomotor retardation - mental retardation
• Polymicrogyria - turricephaly - hypogenitalism - mental retardation
• Polyneuropathy - mental retardation - acromicria - premature menopause - mental retardation
• Pontocerebellar hypoplasia with infantile spinal muscular atrophy - mental retardation
• Popliteal pterygium syndrome, lethal type - mental retardation
• Porencephaly - mental retardation
• Porencephaly - cerebellar hypoplasia - malformations - mental retardation
• Potocki-Lupski syndrome - mild mental retardation
• Potocki-Shaffer syndrome
• Powell-Chandra-Saal syndrome - mental retardation
• PPM-X syndrome
• Prader-Willi syndrome - Mental retardation
• Prenatal dwarfism - elevated growth hormone levels - mental retardation - congenital hearing loss - mental retardation
• Prenatal infections
• Primerose syndrome - mental retardation
• Primrose Syndrome - mental retardation
• Progeria - mental retardation
• Progeria short stature pigmented nevi - mental retardation
• Progressive black carbon hyperpigmentation of infancy - mental retardation
• Progressive encephalopathy-edema-hypsarrhythmia-optic atrophy syndrome
• Progressive neurodegeneration - joint laxity - cataract - mental retardation
• Prolidase deficiency - mental retardation
• Propionyl-CoA carboxylase deficiency
• Proteus like syndrome mental retardation eye defect - mental retardation
• Proteus syndrome
• Proud syndrome
• Proud-Levine-Carpenter syndrome - mental retardation
• Proximal 19q trisomy - mental retardation
• Pseudo-torch syndrome - mental retardation
• Pseudoadrenoleukodystrophy - mental retardation
• Pseudoaminopterin syndrome - mental retardation
• Pseudoglycogenosis II - mental retardation
• Pseudohypoparathyroidism - mental retardation
• Pseudohypoparathyroidism type 1a
• Pseudoprogeria syndrome - mental retardation
• Pterygia - Mental retardation - Distinctive Craniofacial Features - mental retardation
• Pterygia - mental retardation - facial dysmorphism - mental retardation
• Pterygium colli - mental retardation - digital anomalies - mental retardation
• Pterygium, Popliteal, lethal type - mental retardation
• Ptosis - coloboma - mental retardation - mental retardation
• Ptosis - coloboma - trigonocephaly - mental retardation
• Purine nucleoside phosphorylase (PNP) deficiency
• Purine nucleoside phosphorylase deficiency - mental retardation
• Pyruvate dehydrogenase deficiency - mental retardation
• Pyruvate dehydrogenase phosphatase deficiency - mental retardation
• Quattrin mcpherson syndrome - mental retardation
• Radioulnar synostosis mental retardation hypotonia - mental retardation
• Rajab-Spranger syndrome - mental retardation
• Ramban-Hasharon syndrome - retarded mental development
• Ramon syndrome
• Ramos-Arroyo Syndrome - mental retardation
• Ramos-ArroyoClark syndrome - mental retardation
• Rasmussen encephalitis - progressive mental retardation
• Rasmussen subacute encephalitis - mental retardation
• Rasmussen's Encephalitis - mental retardation
• Rayner-Lampert-Rennert syndrome - mental retardation
• Reardon-Wilson-Cavanagh syndrome - mental retardation
• Recessive deafness-onychodystrophy-osteodystrophy-retardation syndrome
• Reese-Ellsworth syndrome - mental retardation
• Renpenning syndrome - mental retardation
• Renpenning syndrome 1 - mental retardation
• Retinis pigmentosa - deafness - hypogenitalism - mental retardation
• Retinitis pigmentosa - mental retardation - deafness - mental retardation
• Retinitis pigmentosa, deafness, mental retardation, hypogonadism - mental retardation
• Retinopathy pigmentary - intellectual deficit - mental retardation
• Retinopathy pigmentary mental retardation - mental retardation
• Retinopathy, pigmentary and mental retardation - mental retardation
• Rett syndrome
• Rett-like syndrome - mental retardation
• Rh problems
• Rhizomelic chondrodysplasia punctata
• Rhizomelic chondrodysplasia punctata, type 1 - mental retardation
• Rhizomelic chondrodysplasia punctata, type 3 - mental retardation
• Rhizomelic syndrome - mental retardation
• Rhombencephalosynapsis - mental retardation
• Richards-Rundle syndrome - mental retardation
• Richieri Costa Guion Almeida Cohen syndrome - mental retardation
• Richieri Costa Guion-Almeida syndrome - mental retardation
• Richieri-Costa Da Silva syndrome - mental retardation
• Rickets - mental retardation
• Rieger Syndrome - mental retardation
• Ring D2 chromosome - mental retardation
• Ritscher-Schinzel syndrome
• Roberts pseudothalidomide syndrome
• Roberts syndrome - mental retardation
• Rodrigues blindness - mental retardation
• Roifman syndrome - mental retardation
• Rommen-Mueller-Sybert syndrome - mental retardation
• Rubella congenital syndrome - Mental retardation
• Rubella, congenital
• Rubinstein-Taybi like syndrome - mental retardation
• Rubinstein-Taybi syndrome
• Rud's syndrome
• Rutherfurd syndrome
• Ruvalcaba syndrome - mental retardation
• Ruvalcaba-Reichert-Smith syndrome
• Ruzicka-Goerz-Anton syndrome - mental retardation
• Sabin-Feldman syndrome - mental retardation
• Saccharopine dehydrogenase deficiency
• Salaam attacks
• Salla disease
• Sanfilippo disease
• Sanjad-Sakati syndrome
• Sarcosinaemia
• Saul-Wilkes-Stevenson syndrome - mental retardation
• Savants
• Say-Barber-Miller syndrome - mental retardation
• Say-Carpenter syndrome - mental retardation
• Say-Field-Coldwell syndrome - mental retardation
• Say-Meyer syndrome - mental retardation
• SCARF syndrome - mental retardation
• Schaap-Taylor-Baraitser syndrome - mental retardation
• Schaefer-Stein-Oshman syndrome - mental retardation
• Schimke, X-linked, mental retardation syndrome - mental retardation
• Schindler disease, type 3 - mental retardation
• Schinzel acrocallosal syndrome
• Schizencephaly - mental retardation
• Schizophrenia - mental retardation - deafness - retinitis - mental retardation
• Schofer beetz bohl syndrome - mental retardation
• Scholte syndrome - mental retardation
• Schwartz-Jampel-Aberfeld syndrome
• Sclerosing bone dysplasia - mental retardation - mental retardation
• Scott craniodigital syndrome
• Scott syndrome - mental retardation
• Seckel syndrome - mental retardation
• Seckel syndrome 1 - mental retardation
• Seckel syndrome 2 - mental retardation
• Seckel syndrome 3 - mental retardation
• Seckel syndrome 4 - mental retardation
• Seckel-like syndrome, type Buebel - mental retardation
• Seckle syndrome - mental retardation
• Seemanova syndrome 1
• Seemanova-Lesny syndrome - retarded mental development
• Seitelberger's disease
• Seizures - intellectual deficit due to hydroxylysinuria - mental retardation
• Seizures mental retardation hair dysplasia - mental retardation
• Sengers-Hamel-Otten syndrome - mental retardation
• Senior-Loken Syndrome - mental retardation
• Septo-Optic Dysplasia - mental retardation
• Septooptic dysplasia - digital anomalies - mental retardation
• Severe achondroplasia with developmental delay and acanthosis nigricans - mental retardation
• Severe myoclonic epilepsy in infancy
• Shaken Baby Syndrome - mental retardation
• Short limb dwarf mental retardation myopia - mental retardation
• Short stature - abnormal skin pigmentation - mental retardation - mental retardation
• Short stature - craniofacial anomalies - genital hypoplasia - mental retardation
• Short stature mental retardation eye anomalies - mental retardation
• Short stature mental retardation eye defects - mental retardation
• Short stature webbed neck heart disease - mental retardation
• Shoulder girdle defect - mental retardation, familial - mental retardation
• Shprintzen omphalocele syndrome - mental retardation
• Shprintzen-Golberg craniosynostosis - mental retardation
• Shprintzen-Goldberg syndrome
• Shwachman syndrome - mental retardation
• Shwachman-Diamond syndrome
• Sialidosis type 1
• Sialidosis type 2 - mental retardation
• Sialidosis type II - mental retardation
• Sialidosis type II, congenital - mental retardation
• Sialidosis type II, infantile - mental retardation
• Sialidosis type II, juvenile - mental retardation
• Sialuria, Finnish type - mental retardation
• SIBIDS syndrome - mental retardation
• Siderius type X-linked mental retardation syndrome - mental retardation
• Simpson-Golabi-Behmel syndrome - mental retardation
• Simpson-Golabi-Behmel syndrome, type 1 (SGBS1) - mental retardation
• Simpson-Golabi-Behmel syndrome, type 2 - mental retardation
• Singh-Chhaparwal-Dhanda syndrome - mental retardation
• Single upper central incisor - mental retardation
• Sjogren-Larsson syndrome
• Skeletal dysplasia - coarse facies - mental retardation - mental retardation
• Skeletal dysplasia - mental retardation - mental retardation
• Sketetal dysplasia coarse facies mental retardation - progressive mental retardation
• Small syndrome - mental retardation
• Smith-Fineman-Myers syndrome 1 - mental retardation
• Smith-Fineman-Myers syndrome 2 - mental retardation
• Smith-Lemli-Opitz syndrome
• Smith-Magenis syndrome
• Smith-Martin-Dodd syndrome - mental retardation
• Smith-McCort dysplasia
• Snyder-Robinson syndrome - mental retardation
• Sohval-Soffer syndrome - mental retardation
• Sotos syndrome - mild mental retardation
• Sparse hair - ptosis - mental retardation - mental retardation
• Spastic diplegia, infantile type - mental retardation
• Spastic paraplegia 14, autosomal recessive - mild mental retardation
• Spastic paraplegia 15, autosomal recessive - mental retardation
• Spastic paraplegia 16, X-linked - mental retardation
• Spastic paraplegia 2, X-linked - mental retardation
• Spastic paraplegia 26, autosomal recessive - mild mental retardation
• Spastic paraplegia 32, autosomal recessive - mild mental retardation
• Spastic paraplegia 4, autosomal dominant - mental retardation
• Spastic paraplegia epilepsy mental retardation - mental retardation
• Spastic paraplegia glaucoma precocious puberty - mental retardation
• Spastic paraplegia nephritis deafness - mental retardation
• Spastic paraplegia type 5A, recessive - mental retardation
• Spastic paraplegia type 5B, recessive - mental retardation
• Spastic paraplegia with precocious puberty - mental retardation
• Spastic paresis - glaucoma - mental retardation - mental retardation
• Spastic quadriplegia - retinitis pigmentosa - mental retardation - mental retardation
• Spastic tetraplegic - cerebral palsy - mental retardation
• Spasticity - mental retardation - mental retardation
• Spasticity - mental retardation - epilepsy, X-linked - mental retardation
• Sphingolipidosis - mental retardation
• Sphingomyelinase deficiency
• Spinocerebellar ataxia - amyotrophy - deafness - mental retardation
• Spinocerebellar ataxia - dysmorphism - mental retardation
• Spinocerebellar ataxia 13 - mild mental retardation
• Spinocerebellar ataxia 21 - mental retardation
• Spinocerebellar ataxia 27 - mental retardation
• Spinocerebellar ataxia, autosomal recessive 5 - mental retardation
• Spinocerebellar ataxia-dysmorphism syndrome - mental retardation
• Spinocerebellar degenerescence, book type - mental retardation
• Spondyloepimetaphyseal dysplasia, genevieve type - mental retardation
• Spondyloepimetaphyseal dysplasia, micromelic - mild mental retardation
• Spondyloepimetaphyseal dysplasia, X linked with mental deterioration - progressive mental retardation
• Spondylometaphyseal dysplasia, X-linked - mental retardation
• SSADH deficiency (succinic semialdehyde dehydrogenase deficiency) - mental retardation
• Stevenson-Carey syndrome - mental retardation
• Stickler Syndrome - mental retardation
• Stickler Syndrome, type I - mental retardation
• Stickler Syndrome, type II - mental retardation
• Stickler Syndrome, type III - mental retardation
• Stiff baby syndrome - mental retardation
• Stimmler syndrome - mental retardation
• Stimulus deprivation
• Stoll-Geraudel-Chauvin syndrome - mental retardation
• Stratton-Parker syndrome - mental retardation
• Striatonigral degeneration infantile - mental retardation
• Sturge-Weber syndrome - mental retardation
• Stuve-Wiedemann dysplasia - mental retardation
• Stuve-Wiedemann syndrome - mental retardation
• Subcortical laminar heterotopia - mental retardation
• Succinic semialdehyde dehydrogenase deficiency
• Sulphite oxidase deficiency
• Sutherland-Haan syndrome
• Sylvester (P.E.) syndrome - mental dullness
• Symmetrical thalamic calcifications - mental retardation
• Syndactyly - cataract - mental retardation - mental retardation
• Syndactyly type 1 - microcephaly - mental retardation - physical retardation
• Syphilis - Teratogenic Agent - mental retardation
• Syphilis, congenital
• TAU syndrome - mental retardation
• Tay-Sachs disease
• Tay-Sachs disease - juvenile onset - mental retardation
• Telencephalic leukoencephalopathy - mental retardation
• Temtamy preaxial brachydactyly syndrome - mental retardation
• Temtamy syndrome - mental retardation
• Ter Haar syndrome
• Tetra-amelia with ectodermal dysplasia and lacrimal duct abnormalities - mental retardation
• Tetrahydrobiopterin deficiencies - mental retardation
• Tetramelic deficiencies - Ectodermal dysplasia - deformed ears - other abnormalities - mental retardation
• Tetrasomy X - mental retardation
• Thanos-Stewart-Zonana Syndrome - mental retardation
• Thiele syndrome - mental retardation
• Thiolase deficiency - mental retardation
• Thompson-Baraitser syndrome - mental retardation
• Thoracic dysplasia - hydrocephalus syndrome - mental retardation
• Thrombocytopenia - cerebellar hypoplasia - short stature - mental retardation
• Thumb deformity, alopecia, pigmentation anomaly - mental retardation
• Thyrotropin deficiency, isolated - mental retardation
• Timothy syndrome
• TORCH Syndrome - mental retardation
• Toriello syndrome - mental retardation
• Toxoplasmosis - Teratogenic Agent - mental retardation
• Tranebjaerg-Svejgaard syndrome - mental retardation
• Transplacental infections - mental retardation
• Tricho-hepato-enteric syndrome - mental retardation
• Tricho-retino-dento-digital syndrome - mental retardation
• Tricho-thiodystrophy
• Trichodental syndrome - mental retardation
• Trichorrhexis nodosa syndrome - mental retardation
• Trichoscyphodysplasia - mental retardation
• Trichothiodystrophy - sun sensitivity - mental retardation
• Trichothiodystrophy, type C - mental retardation
• Trichothiodystrophy-neurocutaneous Syndrome - mental retardation
• Trichothiodystrophy-neurotrichocutaneous Syndrome of Pollitt - mental retardation
• Trigonocephaly - bifid nose - acral anomalies - mental retardation
• Trigonocephaly - ptosis - coloboma - mental retardation
• Trigonocephaly - ptosis - mental retardation - mental retardation
• Triosephosphate isomerase 1 - mental retardation
• Triosephosphate isomerase deficiency
• Trisomy 12 mosaicism - mental retardation
• Trisomy 13 mosaicism - mental retardation
• Trisomy 14 Mosaic - mental retardation
• Trisomy 14 Mosaicism Syndrome - mental retardation
• Trisomy 18 mosaicism - mental retardation
• Trisomy 18 Syndrome - mental retardation
• Trisomy 21 mosaicism - mental retardation
• Trisomy 22 - Mental retardation
• Trisomy 22 mosaicism - mental retardation
• Trisomy 3 mosaicism - mental retardation
• Trisomy 6 - mental retardation
• Trisomy 8 mosaicism - mental retardation
• Trisomy X
• Tsao-Ellingson syndrome - mental retardation
• Tsukuhara syndrome - mental retardation
• Tuberous sclerosis - mental retardation
• Tuberous sclerosis, type 1 - mental retardation
• Tuberous sclerosis, type 2 - mental retardation
• Turner's syndrome
• Turner-mongolism polysyndrome - mental retardation
• Tyrosinaemia type 2
• Tyrosinemia, type III - mild mental retardation
• UDP-Galactose-4-epimerase deficiency - Mental retardation
• Ulna hypoplasia with mental retardation - mental retardation
• Ulnar hypoplasia with mental retardation - Mental retardation
• Uncontrolled diabetes mellitus
• Uniparental disomy - Mental retardation
• Uniparental disomy 13 - Mental retardation
• Uniparental disomy of 11 - Mental retardation
• Uniparental disomy of 13 - Mental retardation
• Uniparental disomy of 2 - Mental retardation
• Uniparental disomy of 6 - Mental retardation
• Uniparental disomy, paternal, chromosome 14 - Mental retardation
• Universal Acquired Melanosis - mental retardation
• Unusual facies, arachnodactyly, hypogenitalism and failure to thrive - mental retardation
• Unusual facies, hepatic fibrosis, renal cysts and mental retardation - mental retardation
• Unusual facies, hypotonia, mental retardation and radioulnar synostosis - mental retardation
• Unusual facies, mental retardation, short stature, hemolytic anemia and delayed puberty - mental retardation
• Unusual facies, Myelodysplasia and immunodeficiency - mild mental retardation
• Unusual facies, short webbed neck, mental retardation, short stature - mental retardation
• Upper limb defect eye and ear abnormalities - mental retardation
• Upton Young syndrome - Mental retardation
• Urban Roger Meyer syndrome - Mental retardation
• Urban rogers meyer syndrome - mental retardation
• Urocanase deficiency - Mental retardation
• Urocanate hydratase deficiency
• VACTERL hydrocephaly - mental retardation
• VACTERL with hydrocephalus, X-linked - mental retardation
• Vacuolar Cardiomyopathy and Myopathy, X-linked - mental retardation
• Vagneur Triolle Ripert syndrome - Mental retardation
• Valinemia - mental retardation
• Van Bogaert-Hozay syndrome - Mental retardation
• Van Buchem disease type 2 - Mental retardation
• Van den Bosch syndrome - Mental retardation
• Van der Knaap disease
• Van Maldergem Wetzburger Verloes syndrome - Mental retardation
• Varadi-Papp syndrome
• Varicella - Teratogenic Agent - mental retardation
• Vasquez Hurst Sotos syndrome - Mental retardation
• Velocardiofacial syndrome
• Venencie Powell Winkelmann syndrome - Mental retardation
• Verloes Gillerot Fryns syndrome - Mental retardation
• Viljone Kallis Voges syndrome - Mental retardation
• Vitamin D toxicity - mental retardation
• Vitamin K antagonists embryofoetopathy - mental retardation
• Vitiligo mental retardation facial dysmorphism uremia - Mental retardation
• W syndrome - Mental retardation
• Waaler Aarskog syndrome - Mental retardation
• Waardenburg syndrome type 3
• WAGR syndrome - mental retardation
• Waisman-Laxova syndrome
• Walker Dyson syndrome - Mental retardation
• Walker-Warburg syndrome
• Warburg Sjo Fledelius syndrome - Mental retardation
• Warburton Anyane Yeboa syndrome - Mental retardation
• Warfarin syndrome - Mental retardation
• Watson syndrome - Mental retardation
• Weaver Johnson syndrome - Mental retardation
• Weaver like syndrome - mental retardation
• Weaver Syndrome - mental retardation
• Weaver Williams syndrome - Mental retardation
• Webster Deming syndrome - Mental retardation
• Weismann-Netter-Stuhl Syndrome - Mental retardation
• Weleber Hecht Bigley syndrome - Mental retardation
• Wellesley Carmen French syndrome - Mental retardation
• Wellesley-Carman-French Syndrome - mental retardation
• Whelan syndrome - mental retardation
• White matter hypoplasia corpus callosum agenesia mental retardation - mental retardation
• White matter hypoplasia, corpus callosum agenesia, and mental retardation - Mental retardation
• Whooping Cough - mental retardation
• Wieacker syndrome - Mental retardation
• Wieacker-Wolff syndrome
• Wiedemann Oldigs Oppermann syndrome - Mental retardation
• Wiedemann-Rautenstrauch syndrome
• Wiedemann-Tolksdorf syndrome - mental retardation
• Wildervanck syndrome - mental retardation
• Wildervanck syndrome 2 - mental retardation
• Wilkes Stevenson syndrome - Mental retardation
• Williams syndrome - mental retardation
• Wilms tumor - aniridia - genitourinary anomalies - mental retardation - mental retardation
• Wilson-Turner X-linked mental retardation - Mental retardation
• Winship Viljoen Leary syndrome - Mental retardation
• Wittwer sydnrome - Mental retardation
• Wolcott-Rallison syndrome - Mental retardation
• Wolf-Hirschhorn syndrome
• Wolf-Hirschorn syndrome - Mental retardation
• Wolfram Syndrome 2 - mental retardation
• Wolfram Syndrome, Mitochondrial form - mental retardation
• Woodhouse Sakati syndrome - Mental retardation
• Worster-Drought syndrome
• Wrinkly skin syndrome - Mental retardation
• Wyatt disease - mental retardation
• Wyburn Mason's syndrome - mental retardation
• X chromosome, duplication Xq13 1 q21 1 - Mental retardation
• X chromosome, trisomy 26-28 - Mental retardation
• X chromosome, trisomy Xp3 - Mental retardation
• X chromosome, trisomy Xpter Xq13 - Mental retardation
• X chromosome, trisomy Xq - Mental retardation
• X chromosome, trisomy Xq25 - Mental retardation
• X-linked mental retardation - hypotonia - mental retardation
• X-linked mental retardation 1
• X-linked mental retardation craniofacial abnormal microcepahly club - mental retardation
• X-linked mental retardation craniofacial abnormal microcephaly club - mental retardation
• X-linked mental retardation-hypotonic facies syndrome
• X-linked periventricular heterotopia
• Xylosylprotein 4-beta-galactosyltransferase (XGPT) deficiency - mental retardation
• Xylosylprotein 4-beta-galactosyltransferase deficiency
• Yager-Young syndrome - mental dullness
• Young Simpson syndrome - Mental retardation
• Young-Hughes syndrome - Mental retardation
• Yunis-Varon syndrome
• Zazam Sheriff Phillips syndrome - Mental retardation
• Zellweger Syndrome - mental retardation
• Zlotogora syndrome - Mental retardations
• Zori Stalker Williams syndrome - Mental retardation
• Zunich neuroectodermal syndrome - Mental retardation
• Zunich-Kaye syndrome - mental retardation