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7A61 Advanced sleep-wake phase disorder

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Advanced sleep-wake phase disorder is a recurrent pattern of disturbance of the sleep-wake schedule characterised by persistent advance (to an earlier time) of the major sleep period compared to conventional or desired sleep times. The disorder results in evening sleepiness (prior to the desired bedtime) and awakening earlier than the desired or required times. When sleep is allowed to occur on the advanced 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.

synonyms

• Advanced sleep-wake phase disorder
• Circadian rhythm sleep-wake disorder, advanced type

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