Disorders characterized by hypersomnolence during normal waking hours that may impair cognitive functioning. Subtypes include primary hypersomnia disorders (e.g., IDIOPATHIC HYPERSOMNOLENCE; NARCOLEPSY; and KLEINE-LEVIN SYNDROME) and secondary hypersomnia disorders where excessive somnolence can be attributed to a known cause (e.g., drug affect, MENTAL DISORDERS, and SLEEP APNEA SYNDROME). (From J Neurol Sci 1998 Jan 8;153(2):192-202; Thorpy, Principles and Practice of Sleep Medicine, 2nd ed, p320)

Descriptor ID	D006970
MeSH Number(s)	C10.886.425.800.200 F03.870.400.800.200
Concept/Terms	Disorders of Excessive Somnolence Disorders of Excessive Somnolence Excessive Somnolence Disorder Somnolence Disorder, Excessive Somnolence Disorders, Excessive Excessive Somnolence Disorders Hypersomnolence Disorders Hypersomnolence Disorder DOES (Disorders of Excessive Somnolence) DOESs (Disorders of Excessive Somnolence) Hypersomnolence Disorders, Secondary Hypersomnolence Disorders, Secondary Hypersomnolence Disorder, Secondary Secondary Hypersomnolence Disorder Secondary Hypersomnolence Disorders Hypersomnolence Hypersomnolence Hypersomnolence Disorders, Primary Hypersomnolence Disorders, Primary Hypersomnolence Disorder, Primary Primary Hypersomnolence Disorder Primary Hypersomnolence Disorders Hypersomnia Hypersomnia Hypersomnias Hypersomnia, Recurrent Hypersomnia, Recurrent Hypersomnias, Recurrent Recurrent Hypersomnia Recurrent Hypersomnias

Below are MeSH descriptors whose meaning is more general than "Disorders of Excessive Somnolence".

Below are MeSH descriptors whose meaning is related to "Disorders of Excessive Somnolence".

Below are MeSH descriptors whose meaning is more specific than "Disorders of Excessive Somnolence".