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Signs That You Have a Circadian Rhythm Sleep Disorder

Do you have trouble sleeping or waking up? Find out if a circadian rhythm sleep disorder could be to blame.


The 2005 update of the International Classification of Sleep Disorders designated nine different circadian disorders, including delayed sleep phase type, advanced sleep phase type, nonentrained sleep-wake type, irregular sleep-wake type, shift work type, and jet lag type Read more:


Delayed sleep phase disorder (DSPD), officially called circadian rhythm sleep disorder, delayed sleep phase type, is an inability to fall asleep at a desired, conventional clock time and awaken at a socially acceptable morning time.