1. Primary Insomnia  (Trust Mark: Doctor-Reviewed)
Primary insomnia is difficulty getting to sleep or staying asleep, or having non-refreshing sleep for at least 1 month without any known physical or mental condition. See also: Insomnia concerns• Reviewer: Christos Ballas, M.D., Attending Psychiatrist, Hospital of the University of Pennsylvania, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

2. Insomnia  (Trust Mark: Doctor-Reviewed)
Insomnia is the inability to obtain an adequate amount or quality of sleep. The difficulty can be in falling asleep, remaining asleep, or both. People with insomnia do not feel refreshed when they wake up. Insomnia is a common symptom affecting mi...• Author: Liz Swain