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)

Descriptor ID	D020177
MeSH Number(s)	C10.886.425.800.200.400 F03.870.400.800.200.400
Concept/Terms	Hypersomnolence, Idiopathic Hypersomnolence, Idiopathic Hypersomnolences, Idiopathic Idiopathic Hypersomnolence Idiopathic Hypersomnolences Idiopathic Hypersomnia Hypersomnia, Idiopathic Hypersomnias, Idiopathic Idiopathic Hypersomnias Idiopathic Central Nervous System Hypersomnolence Hypersomnolence, CNS, Idiopathic Idiopathic CNS Hypersomnolence CNS Hypersomnolence, Idiopathic CNS Hypersomnolences, Idiopathic Hypersomnolence, Idiopathic CNS Hypersomnolences, Idiopathic CNS Idiopathic CNS Hypersomnolences

Below are MeSH descriptors whose meaning is more general than "Hypersomnolence, Idiopathic".

Below are MeSH descriptors whose meaning is related to "Hypersomnolence, Idiopathic".

Below are MeSH descriptors whose meaning is more specific than "Hypersomnolence, Idiopathic".