a. Complaint of insomnia or excessive sleepiness.
b. Irregular model of at least three sleep episodes in the course of a 24-hour period.
c. Presence of the sleep model for at least three months.
d. Evidence of altered chronobiological rhythmicity attributable to any of the following: Demonstration of loss of normal sleep-waking model via continuous polysomnography monitoring for at least 24 hours.
Demonstration of normal temperature model loss via continuous polysomnographic monitoring for at least 24 hours.
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