Persistent or recurrent pattern of sleep disruption primarily due to alteration of the circadian system or misalignment between endogenous circadian rhythm and sleep-wake schedule
Predominant complaint of dissatisfaction with sleep quantity/quality: ≥1 of: difficulty initiating sleep; difficulty maintaining sleep (frequent awakenings); early morning awakening with inability to return to sleep
B. Leads to excessive sleepiness or insomnia, or both C. Clinically significant distress or impairment
B. Causes clinically significant distress or impairment in social, occupational, educational, academic, behavioural, or other important areas of functioning C. Sleep difficulty occurs ≥3 nights/week D. Sleep difficulty present ≥3 months
A. Persistent or recurrent pattern of sleep disruption primarily due to alteration of the circadian system or misalignment between endogenous circadian rhythm and sleep-wake schedule B. Leads to excessive sleepiness or insomnia, or both C. Clinically significant distress or impairment
A. Predominant complaint of dissatisfaction with sleep quantity/quality: ≥1 of: difficulty initiating sleep; difficulty maintaining sleep (frequent awakenings); early morning awakening with inability to return to sleep B. Causes clinically significant distress or impairment in social, occupational, educational, academic, behavioural, or other important areas of functioning C. Sleep difficulty occurs ≥3 nights/week
Delayed sleep-wake phase type; Advanced sleep-wake phase type; Irregular sleep-wake type; Non-24-hour sleep-wake type
Episodic; Persistent; Recurrent
Insomnia disorder (sleep timing problem vs sleep initiation/maintenance problem); Hypersomnolence disorder (sleepiness regardless of timing); MDD with hypersomnia or insomnia (mood episode context)
Short-term insomnia (< 3 months - do not diagnose insomnia disorder); Circadian rhythm sleep-wake disorder (sleep timing problem, not sleep maintenance); Restless legs syndrome (urge to move legs at rest)