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| Definition: | Feeling abnormally sleepy or drowsy -- often with a strong tendency to actually fall asleep in inappropriate situations or at inappropriate times.
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| Alternative Names: | Sleepiness - during the day; Hypersomnia; Somnolence
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| Considerations: | Excessive daytime sleepiness (without a known cause) suggests the presence of a significant sleep disorder and is different from fatigue.
Depression, anxiety, stress, and boredom are commonly thought to cause excessive sleepiness, but in fact these conditions cause fatigue and apathy.
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| Common Causes: | - Self-imposed short sleep time
- Medications (tranquilizers, sleeping pills, antihistamines)
- Sleep disorders (such as sleep apnea syndrome and narcolepsy)
- Other medical conditions (such as hypo-thyroidism, hyper-calcemia, and hypo/hyper-natremia)
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Review Date: 1/16/2002
Reviewed By: Anthony E. Douglas, M.D., Department of Primary Care Internal Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA. Review provided by VeriMed Healthcare Network.
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The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2003 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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