The Wiley Handbook of Obsessive Compulsive Disorders, 2 volume set, provides a comprehensive reference on the phenomenology, epidemiology, assessment, and treatment of OCD and OCD-related conditions throughout the lifespan and across cultures. Provides the most complete and up-to-date information on the highly diverse spectrum of OCD-related issues experienced by individuals through the lifespan and cross-culturally Covers OCD-related conditions including Tourette's syndrome, excoriation disorder, trichotillomania, hoarding disorder, body dysmorphic disorder and many others OCD and related conditions present formidable challenges for both research and practice, with few studies having moved beyond the most typical contexts and presentations Includes important material on OCD and related conditions in young people and older adults, and across a range of cultures with diverse social and religious norms