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Sleep Disorder Trends:
Hypersomnia/daytime sleepiness is episodes of excessive sleepiness during the day. Follow the links below to find WebMD's comprehensive coverage about how hypersomnia/daytime sleepiness occurs, how it's diagnosed, how to treat it, and much more.
Are you sleepy all the time? Find out what could be causing your excessive sleepiness, from working shifts to an underlying sleep disorder.
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Always Tired? Find Out What's Wrong
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