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Shift work sleep disorder (SWSD) is a circadian rhythm sleep disorder characterized by insomnia, excessive sleepiness, or both affecting people whose work hours overlap with the typical sleep period. Insomnia can be the difficulty to fall asleep or to wake up before the individual has slept enough. [ 1 ]
DSPD is a circadian rhythm sleep disorder, characterised by a mismatch between a person's internal biological clock and societal norms. [2] Chronotherapy uses the human phase response to light or melatonin. The American Academy of Sleep Medicine has recommended chronotherapy for the treatment of circadian rhythm and sleep disorders. [3]
Modafinil (brand name Provigil) is a stimulant approved in the US for treatment of shift-work sleep disorder, which shares some characteristics with DSPD. A number of clinicians prescribe it for DSPD patients, as it may improve a sleep-deprived patient's ability to function adequately during socially desirable hours.
Shift work sleep disorder (SWSD): Approximately 9% of Americans who work night or irregular work shifts are believed to experience shift work sleep disorder. [21] Night shift work directly opposes the environmental cues that entrain our biological clock, so this disorder arises when an individual's clock is unable to adjust to the socially ...
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, and skin wound infections.
In sleep medicine, we use very small doses of melatonin multiple hours before bed to help gradually shift the body’s clock (circadian rhythm) in people with delayed sleep phase disorder, jet lag ...
Light therapy, which involves a bright light exposure of thousands of lux of white light or about 400 lux of blue light on awakening to counteract the tendency for circadian rhythms to delay (similar to treatment for delayed sleep phase disorder [6] and seasonal affective disorder), is not currently recommended until more studies appear ...
[6] [4] A shift in the circadian phase response curve creates a connection between the amount of light in a day (day length) and depressive symptoms in this disorder. [ 6 ] [ 4 ] Light seems to have therapeutic antidepressant effects when an organism is exposed to it at appropriate times during the circadian rhythm, regulating the sleep-wake cycle.
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