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Disorders of Excessive Somnolence MeSH Descriptor Data 2025


MeSH Heading
Disorders of Excessive Somnolence
Tree Number(s)
C10.886.425.800.200
F03.870.400.800.200
Unique ID
D006970
RDF Unique Identifier
http://id.nlm.nih.gov/mesh/D006970
Scope Note
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)
Entry Version
DIS EXCESSIVE SOMNOLENCE
Entry Term(s)
DOES (Disorders of Excessive Somnolence)
Daytime Sleepiness
Daytime Somnolence
Excessive Daytime Sleepiness
Excessive Somnolence Disorders
Hypersomnia
Hypersomnia, Recurrent
Hypersomnolence
Hypersomnolence Disorders
Hypersomnolence Disorders, Primary
Hypersomnolence Disorders, Secondary
Primary Hypersomnia Disorders
Primary Hypersomnolence Disorders
Secondary Hypersomnia Disorders
Secondary Hypersomnolence Disorders
Public MeSH Note
2000; see HYPERSOMNIA 1991-1999, see SLEEP DISORDERS 1975-1990
History Note
2000(1975)
Date Established
1991/01/01
Date of Entry
1974/11/19
Revision Date
2020/02/21
Disorders of Excessive Somnolence Preferred
Hypersomnia Related
Hypersomnolence Related
Hypersomnia, Recurrent Narrower
Hypersomnolence Disorders, Primary Narrower
Hypersomnolence Disorders, Secondary Narrower
Excessive Daytime Sleepiness Related
Daytime Somnolence Related
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