Obsessive-Compulsive and Related Disorders: Epidemiology

The obsessive-compulsive and related disorders (OCRDs) represent a new diagnostic category in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), comprising obsessive-compulsive disorder (OCD), body dysmorphic disorder (BDD), hoarding disorder (HD), trichotillomania (hair-pulling disorder), excoriation disorder (skin-picking disorder), substance- or medication-induced OCRD, OCRD due to another medical condition, and other and unspecified OCRD. This DSM-5 category comprises diagnoses thought to be related to OCD in characteristics such as age of onset, course, comorbidity, family history, neurobiology, and treatment response, and they are included in the OCRD category to facilitate understanding and treatment of these disorders. As the OCRD category represents a unique grouping of disorders, and in fact several diagnoses in this category are appearing for the first time in the DSM-5 ...

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