Obsessive-Compulsive and Related Disorders
1. Overview & Epidemiology
DSM-5-TR carved Obsessive-Compulsive and Related Disorders out of the old "anxiety neuroses" into a stand-alone chapter. Members: OCD, body dysmorphic disorder (BDD), hoarding disorder, trichotillomania (hair-pulling), excoriation (skin-picking), plus substance/medication-induced and secondary-to-medical-condition forms. ICD-10 (used at Debrecen) still files OCD under F42 within neurotic/stress-related disorders; ICD-11 has now created its own OCD-related grouping mirroring DSM-5.
The unifying thread: intrusive, repetitive thoughts/urges and repetitive behaviours done to neutralise them. Contrast this with anxiety disorders (cued/uncued fea
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