2. Health Tip: Nightmares Keeping You Up? - US News and World Report
Some possible reasons for bad dreams

3. Severe Nightmares May Warn of Suicidal Symptoms - US News and World Report
Treating sleep problems could aid suicide prevention, researchers suggest

4. Nightmares  (Trust Mark: Doctor-Reviewed)
A nightmare is a dream occuring during rapid eye movement (REM) sleep that brings out feelings of strong fear, terror, distress, or extreme anxiety. Nightmares are usually in the latter part of the night and wake up the sleeper, who is able to remem...• Reviewer: Linda Vorvick, MD, Family Physician, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and Timothy A. Rogge, MD, private practice in Psychiatry, Kirkland, Washington. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

5. Nightmares  (Trust Mark: Doctor-Reviewed)
A frightening dream that occurs during REM (rapid eye movement) sleep. Nightmares—frightening dreams—are the most common type of sleep disturbance in early childhood. They are distinguished from night terrors (pavor nocturnus), another c...