hypersomnia

[ hahy-per-som-nee-uh ]

noun

, Pathology.

1. a tendency to sleep excessively.

Other Words From

• hyper·somni·ac 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%.

From Science Daily

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

From Seattle Times

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

From BBC

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.

From BBC

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

From Washington Times