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What is hypersomnia?

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Hypersomnia is a sleep disorder that causes serious daytime sleepiness. If you regularly feel drowsy during the day, talk to your doctor.

From: Diagnosing Hypersomnia WebMD Medical Reference

SOURCE:  National Sleep Foundation.

Reviewed by Carol DerSarkissian on August 26, 2019

SOURCE:  National Sleep Foundation.

Reviewed by Carol DerSarkissian on August 26, 2019

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How will my doctor figure out why I'm so sleepy?

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