The Disorders is a derivative volume of articles pulled from the award-winning Encyclopedia of Mental Health, providing A-to-Z coverage of the many disorders afflicting mental health patients, including alcohol problems, Alzheimer's disease, depression, epilepsy, gambling, obsessive-compulsive disorder, phobias, and suicide.

According to 1990 estimates, mental disorders represent five of the ten leading causes of disability.* Among "developed" nations, including the United States, major depression is the leading cause of disability. Also near the top of these rankings are...