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Symptoms » Somnolence
 

Somnolence

Contents for Drowsiness
  1. Introduction: Drowsiness
  2. Causes (1028 conditions)
  3. Causes of Types
  4. Diagnostic Guides
  5. Drug causes (1480 listings)
  6. Drug interaction causes (1999 listings)
  7. Diagnostic tests (28 listings)
  8. Questions your doctor may ask (and why) (21 listings)
  9. Videos
  10. Combined symptoms
  11. News (41 listings)

Drowsiness

Somnolence: Somnolence is listed as an alternate name or description for symptom:

Causes of Drowsiness (Somnolence): See detailed list of causes below.

Medical Book Extracts related to Drowsiness (Somnolence): Refer to the excerpt book sections about Drowsiness below.

Drowsiness (medical symptom): Excessive tiredness or sleepiness

Causes of Drowsiness (Somnolence)

The list of medical condition causes of Drowsiness (Somnolence) includes:

  • Various causes of drowsiness or sleepiness include:
    • Sleep debt
    • Not getting enough sleep
    • Shift work
    • Jet lag

All 1028 causes of Drowsiness

More Specific Symptoms for Somnolence:

Review the causes of the following types of more specific symptoms for Somnolence:

Related Symptoms for Somnolence

Research the causes of these related symptoms that are similar to, or related to, the symptom Somnolence:

Broader Symptom Types for Somnolence:

Research the causes of these symptoms that are more broader types of symptom than Somnolence:

More Symptom Information for Somnolence

For a medical symptom description of 'Somnolence', the following symptom information may be relevant to the symptoms: Drowsiness (symptom). However, note that other causes of the symptom 'Somnolence' may be possible.

More information on symptom: Drowsiness:

Medical Textbook Extracts for Somnolence

Free access to excerpts from published medical book extracts about the causes and diagnosis of Drowsiness from the following published medical books is available for more detailed information that is related to Somnolence.

COMA
(Algorithmic Diagnosis of Symptoms and Signs)

... Is there a history of drug or alcohol ingestion? This is a very important question to ask, as many cases of coma are due to acute alcohol intoxication, delirium tremens, opium ... DIAGNOSTIC WORKUP ... READ EXCERPTS »

FATIGUE
(Algorithmic Diagnosis of Symptoms and Signs)

... Is there weight loss? If there is weight loss, one must consider a neoplasm, endocrine disorders such as hyperthyroidism or diabetes mellitus, malnutrition or ... DIAGNOSTIC WORKUP ... READ EXCERPTS »

INSOMNIA
(Algorithmic Diagnosis of Symptoms and Signs)

... Is there dyspnea? If there is a history of dyspnea, heart disease or lung disease should be suspected. Is there a history of drug or alcohol ingestion? There are many drugs ... DIAGNOSTIC WORKUP ... READ EXCERPTS »

SYNCOPE
(Algorithmic Diagnosis of Symptoms and Signs)

... Are there convulsive movements or incontinence? The presence of convulsive movements should suggest convulsions, and the differential diagnosis of this is discussed on page 88 . ... DIAGNOSTIC WORKUP ... READ EXCERPTS »

Fatigue
(In a Page: Signs and Symptoms)

... Fatigue is a very common, although nonspecific, presenting symptom that refers to the sensation of exhaustion during or after usual activities, or a feeling of inadequate energy to begin these... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Insomnia
(In a Page: Signs and Symptoms)

... Insomnia may be a primary diagnosis or a complaint or symptom secondary to an underlying acute or chronic disorder. Many patients have insomnia but do not tell their doctors, so questions about sleep quality should be asked... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Syncope
(In a Page: Signs and Symptoms)

... Syncope is often referred to by patients as “fainting” and is defined as a loss of postural tone and consciousness. Syncope usually lasts for brief periods of a few minutes. Longer periods are of more concern,... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Coma
(In A Page: Pediatric Signs and Symptoms)

... Coma is a state of total unawareness of the self and the environment. There is no eye opening or response to voice or painful stimuli. Coma can be due to dysfunction of either bilateral cerebral... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Fatigue
(In A Page: Pediatric Signs and Symptoms)

... Complaints of fatigue indicate a general state of decreased endurance for, or interest in, activities. It is typically associated with tiredness and sleepiness. Depression as a cause of fatigue in adolescents frequently goes... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Syncope
(In A Page: Pediatric Signs and Symptoms)

... Syncope is temporary loss of consciousness and muscle tone due to decreased cerebral blood flow. It is otherwise known as fainting or blackout. Syncope is a common pediatric problem that, in contrast to that in adults, usually... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Muscle Weakness – Distal
(In A Page: Pediatric Signs and Symptoms)

... Distal weakness is most likely secondary to neuropathy, and is often associated with loss of deep tendon reflexes (DTRs) either with or without sensory abnormalities. In contrast, increased DTRs or extensor plantor responses... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

Muscle Weakness – Proximal
(In A Page: Pediatric Signs and Symptoms)

... Proximal weakness is usually due to dysfunction of the lower motor unit; that is, anterior horn cells in the spinal cord, neuromuscular junction (NMJ), or the muscle itself. The neurologic examination, EMG,... Differential Diagnosis ... Workup and Diagnosis ... Treatment ... READ EXCERPTS »

INSOMNIA
(Differential Diagnosis in Primary Care)

... It is customary to assume that the cause of the disorder is psychogenic and simply to prescribe a sleeping pill to anyone suffering from insomnia, hoping that it will go away by itself. Although this may be true in many cases, the ... READ EXCERPTS »

SYNCOPE
(Differential Diagnosis in Primary Care)

... The differential of syncope or a brief loss of consciousness is best developed with the use of physiology and, to a lesser extent, anatomy. Like convulsions (see page 128), syncope is due to a ... READ EXCERPTS »

COMA AND SOMNOLENCE
(Differential Diagnosis in Primary Care)

... Somnolence is a deep sleep from which the patient can be aroused. Coma is an unconscious state from which the patient cannot be aroused. Because somnolence may be simply an early stage of coma, its etiologies are almost all identical to ... READ EXCERPTS »

WEAKNESS AND FATIGUE, GENERALIZED
(Differential Diagnosis in Primary Care)

... The analysis of the causes of weakness depends on a knowledge of both anatomy and biochemistry. Strength depends on an intact healthy muscle, peripheral nerve, and lower and upper motor ... READ EXCERPTS »

Fatigue
(Handbook of Signs & Symptoms (Third Edition))

... Fatigue is a feeling of excessive tiredness, a lack of energy, or exhaustion accompanied by a strong desire to rest or sleep. This common symptom is distinct from weakness, which involves the muscles, but may occur with it. ... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... READ EXCERPTS »

Insomnia
(Handbook of Signs & Symptoms (Third Edition))

... Insomnia is the inability to fall asleep, remain asleep, or feel refreshed by sleep. Acute and transient during periods of stress, insomnia may become chronic, causing constant fatigue, extreme anxiety as bedtime approaches, and... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Pictures ... READ EXCERPTS »

Level of consciousness, decreased
(Handbook of Signs & Symptoms (Third Edition))

... A decrease in the level of consciousness (LOC), from lethargy to stupor to coma, usually results from a neurologic disorder and may signal a life-threatening complication, such as hemorrhage, trauma, or cerebral edema. However, this sign... Emergency interventions ... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Pictures ... READ EXCERPTS »

Muscle weakness
(Handbook of Signs & Symptoms (Third Edition))

... Muscle weakness is detected by observing and measuring the strength of an individual muscle or muscle group. It can result from a malfunction in the cerebral hemispheres, brain... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Pictures ... READ EXCERPTS »

Syncope
(Handbook of Signs & Symptoms (Third Edition))

... A common neurologic sign, syncope (or fainting) refers to a transient loss of consciousness associated with impaired cerebral blood supply or cerebral hypoxia. It usually occurs abruptly and lasts for seconds to minutes. An episode... Emergency interventions ... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... READ EXCERPTS »

Muscle Weakness
(A Pocket Manual of Differential Diagnosis)

... Acute or Subacute* Electrolyte abnormality    Hyperkalemia    Hypokalemia     ... READ EXCERPTS »

Syncope
(A Pocket Manual of Differential Diagnosis)

... Neurologic or Mechanical Causes, or Both Mediated by vagal stimulation or autonomic insufficiency, or both    Vasovagal ... READ EXCERPTS »

Acute Confusional State or Coma, or Both*
(A Pocket Manual of Differential Diagnosis)

... Usually No Lateralizing Signs, Normal Brainstem Reflexes Drug withdrawal after chronic intoxication, especially    Alcohol   ... READ EXCERPTS »

Hypercoagulable States
(A Pocket Manual of Differential Diagnosis)

... Congenital Antithrombin III deficiency Protein C deficiency Protein S deficiency Homocystinuria ... READ EXCERPTS »

Chronic fatigue syndrome
(Professional Guide to Diseases (Eighth Edition))

... Sometimes called chronic Epstein-Barr virus, or myalgic encephalomyelitis, chronic fatigue and immune dysfunction syndrome is typically marked by debilitating fatigue, neurologic abnormalities,... Causes ... Signs and symptoms ... Diagnosis ... Treatment ... Special considerations ... Pictures ... READ EXCERPTS »

Fatigue
(Professional Guide to Signs & Symptoms (Fifth Edition))

... Fatigue is a feeling of excessive tiredness, lack of energy, or exhaustion accompanied by a strong desire to rest or sleep. This common symptom is distinct from weakness, which involves the muscles, but may accompany... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Patient counseling ... READ EXCERPTS »

Insomnia
(Professional Guide to Signs & Symptoms (Fifth Edition))

... Insomnia is the inability to fall asleep, remain asleep, or feel refreshed by sleep. Acute and transient during periods of stress, insomnia may become chronic, causing constant fatigue,... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Level of consciousness, decreased
(Professional Guide to Signs & Symptoms (Fifth Edition))

... A decrease in level of consciousness (LOC), from lethargy to stupor to coma, usually results from a neurologic disorder and may signal a life-threatening complication, such as hemorrhage, trauma, or cerebral... Emergency Interventions ... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Pictures ... READ EXCERPTS »

Muscle weakness
(Professional Guide to Signs & Symptoms (Fifth Edition))

... Muscle weakness is detected by observing and measuring the strength of an individual muscle or muscle group. It can result from a malfunction in the cerebral hemispheres, brain stem, spinal cord, nerve roots, peripheral... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Pictures ... READ EXCERPTS »

Syncope
(Professional Guide to Signs & Symptoms (Fifth Edition))

... A common neurologic sign, syncope (or fainting) refers to transient loss of consciousness associated with impaired cerebral blood supply or cerebral hypoxia. It usually occurs abruptly and lasts for seconds to minutes. An... Emergency interventions ... History and physical examination ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Patient counseling ... READ EXCERPTS »

Coma
(The 10-Minute Diagnosis Manual: Symptoms and Signs in the Time-Limited Encounter)

... Anne Cather Cutlip Coma represents a state of unarousable unresponsiveness in which the patient has no evidence of self or environmental awareness (1). Approach.  A... History ... Physical examination ... Testing ... Diagnostic assessment. ... READ EXCERPTS »

Fatigue
(The 10-Minute Diagnosis Manual: Symptoms and Signs in the Time-Limited Encounter)

... Meg Hayes Fatigue is both a normal human response as well as a symptom of physical or psychological disease. It is a subjective sensation that is multicausal... Approach ... History ... Physical examination ... Testing. ... Diagnostic assessment ... READ EXCERPTS »

Insomnia
(The 10-Minute Diagnosis Manual: Symptoms and Signs in the Time-Limited Encounter)

... Charles E. Henley Insomnia is more than just being unable to fall asleep. It is a subjective condition of insufficient or nonrestorative sleep despite an adequate opportunity to sleep (1). The Institute of... Approach. ... History ... Physical examination. ... Testing ... Diagnostic assessment ... READ EXCERPTS »

Syncope
(The 10-Minute Diagnosis Manual: Symptoms and Signs in the Time-Limited Encounter)

... James C. Chesnutt Syncope is a common and concerning medical problem, which accounts for 3% of emergency room visits and up to 6% of hospital admissions. Although the cause of syncope can be life... Approach. ... History ... Physical examination ... Testing. ... Diagnostic assessment. ... Pictures ... READ EXCERPTS »

Coma
(Field Guide to Bedside Diagnosis)

... Differential Overview ❑ Alcohol intoxication ❑ Drug overdose ❑ Hypoglycemia &... Diagnostic Approach ... Clinical Findings ... Pictures ... READ EXCERPTS »

Fatigue
(Field Guide to Bedside Diagnosis)

... Differential Overview ❑ Infectious mononucleosis ❑ Depression ❑ Diabetes ❑... Diagnostic Approach ... Clinical Findings ... READ EXCERPTS »

Syncope
(Field Guide to Bedside Diagnosis)

... Differential Overview Orthostatic/Autonomic ❑ Neurally mediated hypotension ❑ Volume depletion ... Diagnostic Approach ... Clinical Findings ... READ EXCERPTS »

Chronic fatigue and immune dysfunction syndrome
(Handbook of Diseases)

... Chronic fatigue and immune dysfunction syndrome (CFIDS) — also known as chronic fatigue syndrome, chronic Epstein-Barr virus [EBV], benign myalgic encephalomyelitis, and ... Causes ... Signs and symptoms ... Diagnosis ... Treatment ... Special considerations ... Pictures ... READ EXCERPTS »

Level of consciousness, decreased
(Alarming Signs and Symptoms: Lippincott Manual of Nursing Practice Series)

... A decrease in level of consciousness (LOC), from lethargy to stupor to coma, usually results from a neurologic disorder and may signal a life-threatening complication, such as hemorrhage, trauma, or cerebral edema. However, this sign can... Assessment ... History ... Physical examination ... Pediatric pointers ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures ... READ EXCERPTS »

Syncope
(Alarming Signs and Symptoms: Lippincott Manual of Nursing Practice Series)

... A common neurologic sign, syncope (or fainting) refers to transient loss of consciousness associated with impaired cerebral blood supply or cerebral hypoxia. It usually occurs abruptly and... Assessment ... History ... Physical examination ... Pediatric pointers ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... READ EXCERPTS »

Fatigue
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

... Fatigue is a feeling of excessive tiredness, lack of energy, or exhaustion accompanied by a strong desire to rest or sleep. This common symptom is distinct from weakness, which... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Insomnia
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

... Insomnia is the inability to fall asleep, remain asleep, or feel refreshed by sleep. Acute and transient during periods of stress, insomnia may become chronic, causing constant fatigue, extreme anxiety... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Geriatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Level of consciousness, decreased
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

... A decrease in level of consciousness (LOC), which can range from lethargy to stupor to coma, usually results from a neurologic disorder and may signal a life-threatening complication, such as hemorrhage,... Emergency Actions ... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Muscle weakness
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

... Muscle weakness is detected by observing and measuring the strength of an individual muscle or muscle group. It can result from a malfunction in the cerebral hemispheres, brain stem, spinal cord, nerve roots, peripheral nerves, or myoneural... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Syncope
(Signs & Symptoms: A 2-in-1 Reference for Nurses)

... A common neurologic sign, syncope (or fainting) refers to transient loss of consciousness associated with impaired cerebral blood supply or cerebral hypoxia. It usually occurs abruptly and lasts for seconds to minutes. An... Emergency Actions ... History ... Physical assessment ... Medical causes ... Other causes ... Special considerations ... Pediatric pointers ... Patient counseling ... Pictures ... READ EXCERPTS »

Fatigue
(The Diagnostic Approach to Symptoms and Signs in Pediatrics)

...Defined as lack of energy for activitiesand decreased endurance for them. Principal Causes of Fatigue Physiologiccauses Pathologic causes Anemia Infection Chronic disease ... Clinical Features and Diagnosis ... Diagnostic Approach ... References ... READ EXCERPTS »

Syncope and Dizziness
(The Diagnostic Approach to Symptoms and Signs in Pediatrics)

...Syncope is a transient loss of consciousnessand postural tone usually produced by impaired cerebral blood flow.Generally, a syncopal episode in childhood is a benign isolatedevent; however, some causes can be life threatening. Because... Principal Causes of Syncope and Dizziness ... Clinical Features and Diagnosis ... Diagnostic Approach ... References ... READ EXCERPTS »

Alteration in Consciousness
(The Diagnostic Approach to Symptoms and Signs in Pediatrics)

... Consciousness—awarenessof one's self and environment—depends on integrityof reticular activating system and cerebral hemispheres. Disease processes that depress reticularactivating system... Principal Causes of Alteration in Consciousness ... Clinical Features and Diagnosis ... Diagnostic Approach ... References ... READ EXCERPTS »

Fatigue
(Nursing: Interpreting Signs and Symptoms)

... Fatigue is a feeling of excessive tiredness, a lack of energy, or exhaustion accompanied by a strong desire to rest or sleep. This common symptom is distinct from weakness, which involves the muscles, but may occur with it. ... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures ... READ EXCERPTS »

Insomnia
(Nursing: Interpreting Signs and Symptoms)

... Insomnia is the inability to fall asleep, remain asleep, or feel refreshed by sleep. Acute and transient during periods of stress, insomnia may become chronic, causing constant fatigue, extreme anxiety... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures ... READ EXCERPTS »

Level of consciousness, decreased
(Nursing: Interpreting Signs and Symptoms)

... A decrease in the level of consciousness (LOC), from lethargy to stupor to coma, usually results from a neurologic disorder and may signal a life-threatening complication, such as hemorrhage, trauma, or cerebral edema. However,... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures ... READ EXCERPTS »

Muscle weakness
(Nursing: Interpreting Signs and Symptoms)

... Muscle weakness is detected by observing and measuring the strength of an individual muscle or muscle group. It can result from a malfunction in the cerebral hemispheres, brain... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... Pictures ... READ EXCERPTS »

Syncope
(Nursing: Interpreting Signs and Symptoms)

... A common neurologic sign, syncope (or fainting) refers to a transient loss of consciousness associated with impaired cerebral blood supply or cerebral hypoxia. It usually occurs abruptly and lasts for seconds to... History and physical examination ... Medical causes ... Other causes ... Nursing considerations ... Patient teaching ... READ EXCERPTS »

INSOMNIA
(Differential Diagnosis in Primary Care)

... It is customary to assume that the cause of the disorder is psychogenic and simply to prescribe a sleeping pill to anyone suffering from insomnia, hoping that it will go away by itself. Although this may be true in many... Pictures ... READ EXCERPTS »

SYNCOPE
(Differential Diagnosis in Primary Care)

... The differential of syncope or a brief loss of consciousness is best developed with the use of physiology and, to a lesser extent, anatomy. Like convulsions , syncope is... Pictures ... READ EXCERPTS »

WEAKNESS AND FATIGUE, GENERALIZED
(Differential Diagnosis in Primary Care)

... The analysis of the causes of weakness depends on a knowledge of both anatomy and biochemistry. Strength depends on an intact healthy muscle, peripheral nerve, and lower... Pictures ... READ EXCERPTS »

COMA AND SOMNOLENCE
(Differential Diagnosis in Primary Care)

... Somnolence is a deep sleep from which the patient can be aroused. Coma is an unconscious state from which the patient cannot be aroused. Because somnolence may be simply an early stage of coma, its etiologies are almost ... Pictures ... READ EXCERPTS »

Coma
(The 5-Minute Pediatric Consult)

... Amy R. Brooks-Kayal, MDEric Marsh, MD, PhD Coma - BASICS Coma - description Coma is defined as a state in which the patient is unresponsive... Coma - DIAGNOSIS ... Coma - TREATMENT ... Coma - FOLLOW UP ... Coma - bibliography ... Coma - CODES ... Coma - FAQ ... READ EXCERPTS »

Copyright notice for book excerpts: Copyright © 2008 Lippincott Williams & Wilkins. All rights reserved.


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