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Continue to ChatCircadian Rhythm Sleep Disorders. Circadian Rhythm Sleep Disorders (CRSDs) are sleep problems in which aperson’s internal sleep-wake cycle does not line up with the times in theirschedule when they need to be asleep or awake. Unlike other sleep problems(such as sleep apnea), CRSDs do not affect the quality of your sleep, butrather cause you to be sleepy when you need to be awake and awake when you needto sleep. https://www.theportugalnews.com/news/2023-01-20/circadian-rhythm-sleep-disorders/73969