Non-24-Hour Sleep-Wake Disorder

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alias
non-24-hour sleep-wake syndrome
Non-24
circadian rhythm sleep disorder, free running type
Hypernychthemeral syndrome
circadian rhythm sleep disorder, free-running type
media
exact match
Wikipedia creation date
12/23/2004
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Wikipedia opening text
Non-24-hour sleep–wake disorder (non-24 or N24SWD) is one of several chronic circadian rhythm sleep disorders (CRSDs). It is defined as a "chronic steady pattern comprising [...] daily delays in sleep onset and wake times in an individual living in society". Symptoms result when the non-entrained (free-running) endogenous circadian rhythm drifts out of alignment with the light/dark cycle in nature. Although this sleep disorder is more common in blind people, affecting up to 70% of the totally blind, it can also affect sighted people. Non-24 may also be comorbid with bipolar disorder, depression, and traumatic brain injury. The American Academy of Sleep Medicine (AASM) has provided CRSD guidelines since 2007 with the latest update released in 2015.
Wikipedia redirect
Hypernychthemeral syndrome
Hypernychthemeral
Non-24 hour sleep phase syndrome
Non 24-hour sleep-wake syndrome
Non-24
Hypernyctohemeral
Non-24-hour sleep-wake syndrome
Non-24-hour sleep-wake disorder
Non-24-hour sleep-wake rhythm disorder
Non-24-hour sleep–wake rhythm disorder
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Freebase ID
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ICD-10-CM
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MonDO ID
MONDO:0019137
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