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Criterion A

• There is a predominant complaint of dissatisfaction with sleep quantity or quality.
• The complaint takes the form of difficulty initiating sleep, difficulty maintaining sleep with frequent awakenings or trouble returning to sleep, or early-morning awakening with inability to return to sleep.

Criterion B

• The sleep disturbance causes clinically significant distress or impairment in social, occupational, educational, academic, behavioral, or other important areas of functioning.

Criterion C

• The sleep difficulty occurs at least 3 nights per week.

Criterion D

• The sleep difficulty has been present for at least 3 months.

Criterion E

• The sleep difficulty occurs despite adequate opportunity for sleep.

Criterion F

• The insomnia is not better explained by another sleep-wake disorder.

Criterion G

• The insomnia is not attributable to a substance or medication.

Criterion H

• Coexisting mental disorders and medical conditions do not adequately explain the predominant insomnia complaint.

Related Guides

• Insomnia Disorder Symptoms and Signs
• Insomnia Disorder Scales and Assessment Tools
• Insomnia Disorder Treatments and Medications
• When to Seek Professional Help for Insomnia Disorder