The Gale Encyclopedia of Mental Health, 4th edition, presents authoritative, comprehensive information on more than 200 mental disorders as well as drugs, treatments and therapies, alternative treatments, diagnostic and evaluation procedures, and related biological concepts totaling 530 articles. Written in language accessible to adult laypersons, it aims to fill the gap between basic consumer resources and highly technical professional materials, such as the Diagnostic and Statistical Manual of Mental Disorders (DSM).