Hypersomnia (redirected from Hypersomnias)

hypersomnia /hy·per·som·nia/ (-som´ne-ah) excessive sleeping or sleepiness.

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hy·per·som·ni·a (hpr-smn-)

n.

A condition in which one sleeps for an excessively long time but is normal in the waking intervals.

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Hypersomnia

An abnormal increase of 25% or more in time spent sleeping. Patients usually have excessive daytime sleepiness.

Mentioned in: Sleep Disorders

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hypersomnia

pathologically excessive sleep or drowsiness.