This authoritative work comprehensively reviews what is known about personality disorders, including vital information to guide clinical decision making. Leading experts synthesize contemporary thinking about the classification, etiologies, and development of these complex disorders. Diagnostic issues are explored, and available assessment instruments are discussed. The "Handbook" provides in-depth coverage of all commonly used psychotherapeutic and pharmacological treatments, with particular attention to the empirical evidence for each approach. Also addressed are special treatment modalities, such as day programs and group therapy, and forensic issues.