Clinical Obsessive-Compulsive Disorders in Adults and Children is a complete, comprehensive overview of OCD, covering its underlying causes, manifestations and treatment. The book begins by covering the basic science of OCD and its biological basis and mechanisms. It discusses the treatment for both adults and children with an emphasis on providing information for clinicians to use in their everyday practice. Using the latest information regarding evidence-based treatments, it takes the reader through medication options, including behavioural therapy, support groups and recent developments in surgical treatment. The clinical manifestations of OCD are covered, as well as the differentiation between OCD and other neuropsychiatric disorders with similar presentations. Chapters on spectrum illnesses including body dysmorphic disorder, impulse control disorders such as trichotillomania, and hoarding are also included. This book will appeal to all mental health professionals, from practitioners to researchers, working in the field of compulsive disorders.