Delayed sleep-wake phase disorder

Description

Delayed sleep-wake phase disorder is a recurrent pattern of disturbance of the sleep-wake schedule characterised by persistent delay in the major sleep period compared to conventional or desired sleep times. The disorder results in difficulty falling asleep and difficulty awakening at desired or required times. When sleep is allowed to occur on the delayed schedule, it is essentially normal in quality and duration. The symptoms should have persisted for at least several months and result in significant distress or mental, physical, social, occupational or academic impairment.

Index terms

Delayed sleep-wake phase disorder
circadian rhythm sleep-wake disorder, delayed type
delayed sleep phase syndrome

Inclusions

delayed sleep phase syndrome

Sibling codes

7A61 – Advanced sleep-wake phase disorder
7A62 – Irregular sleep-wake rhythm disorder
7A63 – Non-24 hour sleep-wake rhythm disorder
7A64 – Circadian rhythm sleep-wake disorder, shift work type
7A65 – Circadian rhythm sleep-wake disorder, jet lag type
7A6Z – Circadian rhythm sleep-wake disorders, unspecified

Foundation entity

Delayed sleep-wake phase disorder – http://id.who.int/icd/entity/1996513332

Part of: 07: Sleep-wake disorders