Circadian rhythm sleep disorder
Circadian rhythm sleep disorder (pronunciation: /sɜːrˈkeɪdiən/ rhythm sleep disorder) is a type of sleep disorder characterized by the misalignment of an individual's internal circadian rhythm and the external environment.
Etymology
The term "circadian" originates from the Latin words "circa" meaning "around" and "diem" meaning "day", signifying the approximate 24-hour cycle in the physiological processes of living beings. The term "rhythm" refers to a strong, regular, repeated pattern of movement or sound. "Sleep disorder" refers to conditions that affect sleep quality, timing, and duration.
Definition
Circadian rhythm sleep disorders are a family of sleep disorders affecting, among other things, the timing of sleep. People with circadian rhythm sleep disorders are unable to sleep and wake at the times required for normal work, school, and social needs. They are generally able to get enough sleep if allowed to sleep and wake at the times dictated by their "body clocks".
Types
There are several types of circadian rhythm sleep disorders, including:
- Delayed sleep phase disorder (DSPD)
- Advanced sleep phase disorder (ASPD)
- Non-24-hour sleep-wake disorder (Non-24)
- Irregular sleep-wake rhythm (ISWR)
- Shift work sleep disorder (SWSD)
- Jet lag
Symptoms
Common symptoms of circadian rhythm sleep disorders include:
- Insomnia
- Excessive daytime sleepiness
- Difficulty waking up in the morning
- Depression or mood changes
Treatment
Treatment for circadian rhythm sleep disorders can include chronotherapy, light therapy, and medication.
See also
External links
- Medical encyclopedia article on Circadian rhythm sleep disorder
- Wikipedia's article - Circadian rhythm sleep disorder
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