
The DSM-5 defines insomnia as dissatisfaction with sleep quantity or quality, associated with one (or more) of the following symptoms:
Difficulty initiating sleep
Difficulty maintaining sleep, characterized by frequent awakenings or problems returning to sleep after awakenings
Early-morning awakening with inability to return to sleep
Other criteria include the following:
The sleep disturbance causes clinically significant distress or impairments in social, occupational, educational, academic, behavioral, or other important areas of functioning
The sleep difficulty occurs at least 3 nights per week
The sleep difficulty is present for at least 3 months
The sleep difficulty occurs despite adequate opportunity for sleep
The insomnia cannot be explained by and does not occur exclusively during the course of another sleep-wake disorder
The insomnia is not attributable to the physiologic effects of a drug of abuse or medication
Coexisting mental disorders and medical conditions do not adequately explain the predominant complaint of insomnia
For more on insomnia, read here.
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Cite this: Stephen Soreff. Fast Five Quiz: How Much Do You Know About Sleep Disorders? - Medscape - Oct 20, 2016.
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