Circadian Rhythm Sleep Disorders

  1. There is a persistent or recurrent pattern of sleep disturbance due primarily to one of the following:
    • Alterations of the circadian time keeping system
    • Misalignment between the endogenous circadian rhythm and exogenous factors that affect the timing or duration of sleep

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  2. D. circadian-related sleep disturbance leads to insomnia, EDS, or both
  3. The sleep disturbance is associated with impairment of social, occupational, or other areas of functioning