1.2: DSM-5 diagnosis

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Doctor and patientPlease review the following DSM-5 information about insomnia:
  • The predominant complaint of dissatisfaction with sleep quantity or quality is associated with one or more of: (1) difficulty initiating sleep, (2) difficulty maintaining sleep, characterized by frequent awakenings or problems returning to sleep after awakenings, (3) early-morning awakening with inability to return to sleep.
  • The sleep disturbance causes clinically significant distress or impairment in social, occupational, educational, academic, behavioral, or other important areas of functioning.
  • It occurs at least three nights per week.
  • It is present for at least three months.
  • It occurs despite adequate opportunity for sleep.
  • It is not better explained by and does not occur exclusively during the course of another sleep-wake disorder.
  • It is not attributable to the physiological effects of illicit substances or medications.
  • Coexisting mental disorders and medical conditions do not adequately explain the predominant complaint of insomnia.
When diagnosing insomnia, practitioners should specify whether or not it occurs with: 1) non-sleep disorder mental comorbidity, 2) another medical comorbidity, and/or 3) another sleep disorder.


Insomnia is not solely defined by amount of sleep, but sleep quality and type as well.