hypersomnia

[hahy-per-som-nee-uh]

noun

Pathology.

1. a tendency to sleep excessively.

Other Word Forms

• hypersomniac noun

Word History and Origins

Origin of hypersomnia¹

First recorded in 1875–80; hyper- + (in)somnia

Example Sentences

Researchers determined that 12 people had probable cases of idiopathic hypersomnia, for a prevalence of 1.5%.

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The new approval will make it much easier for hypersomnia patients to get insurance coverage for Xywav.

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Frequently, patients develop difficulties sleeping - severe insomnia or hypersomnia - and memory problems.

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The woman's mother said her daughter was experiencing post-traumatic stress disorder, hallucinations, and was sleeping for 18 or 20 hours a day because of a condition called hypersomnia.

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There were just three in the past year for other conditions, one each for hypersomnia, hypogonadism and kidney disease,

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