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What is circadian rhythm disorder?

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Circadian rhythm disorder refers to a group of disorders characterized by sleep that is out of synch with one's natural rhythm or what is considered a healthy sleep cycle. Jet lag causes temporary disruptions to a person's circadian rhythm, while other types - routinely falling asleep at 4 a.m. and waking up too early -- cause disrupted sleeping and waking patterns that can lead to chronic insomnia.

SOURCES: 

American Academy of Sleep Medicine: "Circadian Rhythm Sleep Disorders."

eMedicine Health.

Reviewed by Christopher Melinosky on October 24, 2019

SOURCES: 

American Academy of Sleep Medicine: "Circadian Rhythm Sleep Disorders."

eMedicine Health.

Reviewed by Christopher Melinosky on October 24, 2019

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What is chronotherapy for circadian rhythm disorder?

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