Throughout seven prior editions, “CTP” has defined the field of psychiatry. Every edition has garnered accolades from the highest levels of psychiatry, and established the text as the authoritative text for the specialty. Carefully edited to include definitions and diagnostic criteria of mental disorders used in ICD-10 and the DSM-IV-TR, the Eighth Edition features approximately 450 contributors and section editors. A wealth of new information and updated coverage makes the Eighth Edition an essential cornerstone for every psychiatric practice. New information includes information on post-traumatic stress disorder after the attacks of September 11, 2001, and updated information on the many new psychotropic drugs.