Diagnostic Algorithm for Circadian Rhythm Sleep Disorders

K. Borodkin, Y. Dagan

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


Circadian rhythm sleep disorders (CRSDs) are sleep disturbances characterized by a mismatch between the internal biological clock and the environment. These disorders are associated with complaints of insomnia, excessive daytime sleepiness, and impaired daytime functioning in multiple areas. The diagnosis of CRSDs can be established by means of three diagnostic procedures: clinical interview, monitoring of sleep-wake cycle, and assessment of biological markers of the internal circadian rhythmicity. This article describes the specific features of each type of CRSDs as revealed by the three diagnostic procedures.

Original languageEnglish
Title of host publicationEncyclopedia of Sleep
PublisherElsevier Inc.
Number of pages8
ISBN (Electronic)9780123786111
ISBN (Print)9780123786104
StatePublished - 1 Jan 2013
Externally publishedYes


  • Actigraphy
  • Advanced sleep phase syndrome
  • Circadian rhythm sleep disorders
  • Delayed sleep phase syndrome
  • Free-running sleep-wake cycle
  • Irregular sleep-wake cycle
  • Jet lag
  • Shift work
  • Sleep-wake cycle


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