Diseases [C] » Nervous System Diseases [C10] » Sleep Wake Disorders » Dyssomnias » Sleep Disorders, Intrinsic » Disorders of Excessive Somnolence » Idiopathic Hypersomnia
Psychiatry and Psychology [F] » Mental Disorders [F03] » Sleep Wake Disorders » Dyssomnias » Sleep Disorders, Intrinsic » Disorders of Excessive Somnolence » Idiopathic Hypersomnia
Description
A sleep disorder of central nervous system origin characterized by prolonged nocturnal sleep and periods of daytime drowsiness. Affected individuals experience difficulty with awakening in the morning and may have associated sleep drunkenness, automatic behaviors, and memory disturbances. This condition differs from narcolepsy in that daytime sleep periods are longer, there is no association with CATAPLEXY, and the multiple sleep latency onset test does not record sleep-onset rapid eye movement sleep. (From Chokroverty, Sleep Disorders Medicine, 1994, pp319-20; Psychiatry Clin Neurosci 1998 Apr:52(2):125-129) MeSH
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