Of all psychiatric disorders, posttraumatic stress disorder (PTSD) poses one of the greatest challenges to clinicians. Drs. Davidson and Foa, pioneers in the study of PTSD, have teamed up to edit this landmark volume. In Posttraumatic Stress Disorder: DSM-IV (R) and Beyond, members of the DSM-IV Subcommittee on PTSD present a comprehensive and fascinating review of the currently established knowledge about the etiology, epidemiology, neurobiology, course, and clinical presentations of posttraumatic stress syndromes and future directions for study.