Judged: two independent readers; copy check clear.
circadian rhythm sleep disorder
circadian rhythm sleep disorder Circadian rhythm sleep disorder is a sleep problem in which the usual 24-hour sleep-wake pattern is disrupted.
Circadian rhythm sleep disorder is a sleep problem in which the usual 24-hour sleep-wake pattern is disrupted. It can occur in connection with travel, shift work, or other causes that disturb normal timing of sleep.