A review of current literature on obsessive compulsive disorder (OCD) and its associated spectrum conditions, including body dysmorphic disorder (BDD), hoarding, trichotillomania, tic disorders, and Tourette's Syndrome.

The proper diagnostic definition of Obsessive Compulsive Disorder (OCD) has been hotly debated in research and academic communities. There are those who believe true OCD manifests by both obsessions and compulsions, and others who believe OCD is a continuum that may include the presence of only obsessions or only compulsions as part of an Obsessive Compulsive Spectrum Disorder. The debate is not just academic, as it relates to how these disorders may originate, and how they may best be treated. Obsessive-Compulsive Disorder: Subtypes and Spectrum Conditions explores these debates, summarizing the evidence base behind each question, with a conclusion as to how this disorder is best defined going forward, and the conclusions to be drawn in relation to treatment. Divided into two sections, part 1 addresses the heterogeneity of OCD, exploring the concept of content specific subtypes, and the evidence to support such a typology. Each chapter here critically reviews the literature with respect to symptomatology, empirically supported etiologic and conceptual models, support for the symptom presentation as a valid OCD subtype, and a review of subtype-specific treatment literature. These subtypes include contamination and decontamination, doubting and compulsive checking, and symmetry-order and arranging. Part 1 additionally explores compulsive hoarding, tic-related OCD, and autogenous and reactive obsessions. Part 2 explores Obsessive Compulsive Spectrum Disorders (OCS), including trichotillomania, gambling, body dysmorphic disorder, hypochondriasis, tic disorders and Tourette syndrome, eating disorders, obsessive compulsive personality, and compulsive sexual behavior. For each disorder, chapters review the clinical presentation, etiologic and conceptual models, the empirical evidence pertaining to the disorder's standing as an OCS condition, and the ramifications for treatment. Concluding chapters in both sections summarize the evidence toward a recommendation of how OCD is conceptualized for diagnostic and treatment purposes going forward.

The five-year process of preparing for the revision of the Diagnostic and Statistical Manual (DSM) has been organized around a series of conferences convened by the American Psychiatric Association, in collaboration with the World Health Organization and the U.S. National Institutes of Health, to address the future of psychiatric diagnosis. Obsessive-Compulsive Spectrum Disorders: Refining the Research Agenda for DSM-V is the fruit of one of those conferences and presents the most academically sound, thought-provoking, and timely papers from the proceedings. As the conference and book demonstrate, recent advances in psychiatric diagnosis suggest a new approach to obsessive-compulsive disorder (OCD) classification: Research into the pathogenesis of OCD increasingly supports reclassification out of the anxiety disorders and into a separate group of obsessive-compulsive-related disorders (OCRDs). The relationships among OCRDs may be better defined, delineated, and understood if the current categorical diagnostic approach is supplemented with a dimensional approach which assesses obsessive-compulsive symptom domains. Obsessive-compulsive disorders are believed to be underdiagnosed in patients who complain of broad symptoms of anxiety, and reclassification of OCD as an OCRD would promote more careful examination of distinct obsessive-compulsive symptoms, yield more accurate diagnosis, and result in more effective treatments. Reclassification may facilitate future research directions in examining the biological underpinnings of these disorders. In addition to examining the genetic, neurological, and ethno-cultural bases for OCRDs, the book gives special attention to disorders that cross current diagnostic categories, including: Body dysmorphic disorder (BDD) Tourette's syndrome and trichotillomania Impulse-control disorders The process leading to publication of DSM-V is by its nature an exhaustive and complex one, and the conferences play a critical role in reviewing relevant research, assessing the status of scientific knowledge, and advancing that knowledge base. Obsessive-Compulsive Spectrum Disorders: Refining the Research Agenda for DSM-V represents the cutting-edge thinking that will culminate in new diagnoses, classifications, and standards of practice for this debilitating set of disorders. Clinicians and academicians will be fascinated by this glimpse into the next generation of the DSM-V.

While other texts provide general information on obsessive-compulsive disorder (OCD), this is the first book to make a wider, inclusive examination of the disorders that appear to be closely linked to OCD (i.e., body dysmorphic disorder, trichotillomania, Tourette's syndrome, etc.) and review the diagnostic, biological, and treatment issues surrounding their relationship. Obsessive-Compulsive Related Disorders discusses the way compulsivity and impulsivity are studied and understood in the diagnosis and treatment of these obviously related disorders -- should they be diagnosed by categories, or in the context of dimensional models? Subsequent chapters also examine serotonin's role in these psychiatric disorders.

According to recent estimates, one in 50 adults in the United States has obsessive-compulsive disorder and twice that many have had this disorder at some point in their lives. This issue includes articles on the phenomenology of OCD, hypochondriasis, body dysmorphic disorder, genetics and OCD, trichotillomania, Tourette's syndrome, addictive disorders, pharmacotherapy, psychotherapy, and immunology

This book reviews the latest research on OCD and OCSDs and provides evidence-based guidance for assessment and treatment. Several different conditions are covered, including hoarding disorder; body dysmorphic disorder; hair pulling, skin picking, and other body-focused repetitive behaviors; Tourette disorder and tics; hypochondriasis; as well as OCD.

This is the first book to address the clinical and neurobiological interface between schizophrenia and obsessive-compulsive disorder (OCD). There is growing evidence that obsessive-compulsive symptoms in schizophrenia are prevalent, persistent and characterized by a distinct pattern of familial inheritance, neurocognitive deficits and brain activation. This text provides guidelines for differential diagnosis of schizophrenic patients with obsessive-compulsive symptoms, and patients with primary OCD alongside poor insight, psychotic features or schizotypal personality. Written by a leading expert in the coexistence of obsessive-compulsive and schizophrenic phenomena, Schizo-Obsessive Disorder uses numerous case studies to present diagnostic guidelines and to describe a recommended treatment algorithm, demystifying this complex disorder and aiding its effective management. The book is essential reading for psychiatrists, neurologists and the wider range of multidisciplinary mental health practitioners.