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A circadian rhythm is an entrainable, endogenous, biological activity that has a period of roughly twenty-four hours. This internal time-keeping mechanism is centralized in the suprachiasmatic nucleus (SCN) of humans, and allows for the internal physiological mechanisms underlying sleep and alertness to become synchronized to external environmental cues, like the light-dark cycle. [4]
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, neonatal jaundice, and skin wound infections.
The possible causes of non-24-hour sleep-wake disorder are 2-fold: (1), extrinsic: isolation from daily light cycles (such as working in an environment completely devoid of natural lighting); [citation needed] and (2), intrinsic: where some condition, such as blindness or malfunctioning biochemical response to light in the subject, prevent ...
Light restriction in the evening, sometimes called darkness therapy or scototherapy, is another treatment strategy. Just as bright light upon awakening should advance one's sleep phase, bright light in the evening and night delays it (see the PRC). It is suspected that DSPD patients may be overly sensitive to evening light. [38]
Bright lights emitting from many sources — from the oven, an automatic fan, the fire alarm, an air purifier and a wireless phone charger — made it difficult for Moschen to sleep at night. His ...
Generally, diseases outlined within the ICD-11 codes 7A00-7B2Z within Sleep-wake disorders should be included in this category. Subcategories This category has only the following subcategory.
8A41 Circadian rhythm sleep-wake disorder, advanced type; 8A42 Circadian rhythm sleep-wake disorder, irregular sleep-wake rhythm type; 8A43 Circadian rhythm sleep-wake disorder, non-24 hour type; 8A44 Circadian rhythm sleep-wake disorder, shift work type; 8A45 Circadian rhythm sleep-wake disorder, jet lag type
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