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February 10, 2012
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Sleeplessness and Circadian Rhythm Disorder (cont.)

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Synonyms and Keywords

circadian rhythm disorder, biological clock, delayed sleep-phase syndrome, DSPS, advanced sleep-phase syndrome, ASPS, irregular sleep-wake cycle, ultradian rhythm, entrainment, zeitgeber, sleeplessness, insomnia, sleep-wake cycle, jet lag, sleep disorders, sleep deprivation, daytime sleepiness, shift worker, night worker

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Primary Insomnia »

Primary insomnia is sleeplessness that is not attributable to a medical, psychiatric, or environmental cause.

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