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Excessive Daytime Sleepiness

By , About.com Guide

Updated February 12, 2009

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Definition: It is the subjective report of an increased desire to fall asleep and lack of energy during the day even after an adequate night’s sleep. It may indicate the presence of a medical disorder.
Examples:
Excessive daytime sleepiness, including the desire to nap, can be due to sleep deprivation or an underlying medical condition.
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