This is a condition in which a patient doesn't get sleepy until early in the morning the next day and sleeps late into the morning. It is common in older teens.
a circadian rhythm sleep disorder characterized by difficulty achieving sleep onset in the evening and difficulty waking up at a desired time in the morning. It involves a desired sleep time out of sync with physiologic sleep time.
circadian-rhythm sleep disorder thought to result from the endogenous circadian pacemaker being "stuck" at a later-than-normal phase, relative to the desired sleep-wake schedule. The basic pathophysiology of DSPS remains poorly understood.
(DSPS) A circadian rhythm disorder, which in the daily sleep/wake cycle, is delayed with respect to clock time. Accordingly, the sleep phase occurs well after the conventional bedtime. Usually associated with difficulty getting up in the morning.
Delayed Sleep Phase Syndrome (DSPS) occurs when a person's "body clock" (i.e., circadian rhythm) is set to fall asleep too late to get sufficient sleep for school or work.
DSPS] Delayed Sleep Phase Syndrome (DSPS) is a circadian rhythm sleep disorder in which the patient's internal body clock is not in sync with the morning-rise / evening-sleep pattern of the majority of adults. A growing body of evidence suggests that the problem is genetic. DSPS patients may have a severely reduced reaction to the re-setting effect of light on the body clock.
Delayed sleep-phase syndrome (DSPS) is a chronic disorder of sleep timing. People with DSPS tend to fall asleep at very late times, and also have difficulty waking up in the morning.
