Obsessive-Compulsive and Related Disorders Obsessive-compulsive and related disorders include: Body Dysmorphic Disorder (BDD).Body-Focused Repetitive Behavioural Disorder.Hair-Pulling (Trichotillomania) Disorder.Hoarding Disorder.Obsessive-Compulsive Disorder (OCD).Olfactory Reference Syndrome.Skin-Picking (Excoriation) Disorder. Like Loading...