Johns Hopkins Guides provide diagnosis, management, and treatment guidance for infectious diseases, diabetes, and psychiatric conditions. Explore these free sample topics:
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- Insomnia is described as dissatisfaction with sleep quality or quantity associated with difficulty initiating or maintaining sleep or with early morning awakening  .
- Complaints often include taking longer than 30 minutes to fall asleep, staying asleep for less than 6 hours, repeated or extended awakenings, or experiencing sleep that is chronically nonrestorative or poor in quality   .
- Insomnia disorder is classified under the Sleep-Wake Disorders section of the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) .