Causes of Coffin-Lowry syndrome
Coffin-Lowry syndrome Causes: Book Excerpts
What causes Coffin-Lowry syndrome?
Causes: Coffin-Lowry syndrome:
The disorder is caused by a
defective gene, which was found in 1996 on the X chromosome
(Xp22.2-p22.1).
(Source: excerpt from NINDS Coffin Lowry Information Page: NINDS)
Related information on causes of Coffin-Lowry syndrome:
As with all medical conditions,
there may be many causal factors.
Further relevant information on causes of Coffin-Lowry syndrome may be found in:
Causes of Coffin-Lowry syndrome: Online Medical Books
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for more information about the causes of Coffin-Lowry syndrome.
Mental retardation:
Causes and incidence
(Professional Guide to Diseases (Eighth Edition))
A specific cause is identifiable in only about 25% of people who are mentally retarded, and, of these, only 10% have the potential for cure. (See Causes of mental retardation.) In the remaining 75%, predisposing factors, such as deficient prenatal or perinatal care, inadequate nutrition, poor social environment, and poor child-rearing practices, contribute significantly to mental retardation.
Prenatal screening for genetic defects (such as Tay-Sachs disease) and counseling for families at risk for specific defects have reduced the incidence of genetically transmitted mental retardation.
An estimated 1% to 3% of the population is mentally retarded, demonstrating an IQ below 70 and associated difficulty in carrying out tasks required for personal independence.
» READ BOOK EXCERPT ONLINE »
Source: Professional Guide to Diseases (Eighth Edition), 2005
Mental Retardation:
Mental Retardation - etiology
(The 5-Minute Pediatric Consult)
- The cause of the mental retardation is usually an insult to the brain or abnormal development of the CNS but is not evident in many cases. The following represent potential causes.
- Genetic/Familial/Metabolic:
- Fragile X syndrome
- Trisomy 21 (Down syndrome) and other chromosomal abnormalities
- Tuberous sclerosis
- Neurofibromatosis
- PKU (phenylketonuria)
- Other inborn errors of metabolism
- Nervous system anomalies:
- Hydrocephalus
- Lissencephaly
- Seizures
- Endocrinologic:
- Congenital hypothyroidism
- Infectious:
- Prenatal cytomegalovirus, rubella, toxoplasmosis, HIV
- Postnatal bacterial meningitis, neonatal herpes simplex
- Environmental toxins:
- Heavy-metal poisoning such as lead
- In utero drug or alcohol exposure, including fetal alcohol syndrome
- Traumatic:
- Closed-head trauma
- Asphyxia
» READ BOOK EXCERPT ONLINE »
Source: The 5-Minute Pediatric Consult, 2008
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Symptoms of Coffin-Lowry syndrome
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