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DSM-5 sleep-wake disorders classification: overview for use in clinical practice.

Mental health clinicians should appreciate that sleep is a fundamental human behavior and that inadequate sleep has adverse medical, psychiatric, and psychosocial consequences. Sleep disturbances interact with common mental disorders; the two are mutually exacerbating, and both must be appropriately addressed to ensure optimal outcomes for our patients. Sleep is by the brain, of the brain, and for the brain.