- Last edited on May 5, 2021
Circadian Rhythm Sleep-Wake Disorder, Shift Work Type
Primer
Circadian Rhythm Sleep-Wake Disorder, Shift Work Type is a circadian rhythm sleep-wake disorder characterized by a history of an individual working outside of the normal hours (i.e. - 8:00 A.M. to 6:00 P.M) on a regular schedule. Individuals will have symptoms of excessive sleepiness at work, and sleep impairment at home.
Epidemiology
- The prevalence is around 5 to 10% of night shift workers
Prognosis
Comorbidity
Risk Factors
Diagnostic Criteria
Criterion A
A persistent or recurrent pattern of sleep disruption that is primarily due to an alteration of the circadian system or to a misalignment between the endogenous circadian rhythm and the sleep-wake schedule required by an individual’s physical environment or social or professional schedule.
Criterion B
The sleep disruption leads to excessive sleepiness or insomnia, or both.
Criterion C
The sleep disturbance causes clinically significant distress or impairment in social, occupational, and other important areas of functioning.
Specifier Criteria
Shift work type specifier
Specify whether:
- Shift work type: Insomnia during the major sleep period and/or excessive sleepiness (including inadvertent sleep) during the major awake period associated with a shift work schedule (i.e., requiring unconventional work hours).
Length Specifier
Length Specifier
Specify if:
- Episodic: Symptoms last at least
1month but less than3months. - Persistent: Symptoms last
3months or longer. - Recurrent:
2or more episodes occur within the space of1year.