Obsessive–compulsive spectrum

The obsessive–compulsive spectrum is a model of medical classification where various psychiatric, neurological and/or medical conditions are described as existing on a spectrum of conditions related to obsessive–compulsive disorder (OCD). The model suggests that many conditions overlap with OCD in symptomatic profile, demographics, family history, neurobiology, comorbidity, clinical course and response to various pharmacotherapies. Conditions described as being on the spectrum are sometimes referred to as obsessive–compulsive spectrum disorders.

Conditions
The following conditions have been hypothesized by various researchers as existing on the spectrum.


 * Body dysmorphic disorder
 * Some forms of delusional disorder
 * Eating disorders, including anorexia nervosa, bulimia nervosa and binge eating disorder
 * Hypochondriasis
 * Impulse control disorders in general
 * Olfactory reference syndrome
 * Paraphilias
 * Pathological gambling
 * Pica
 * Non-paraphilic sexual addictions
 * Tourette syndrome
 * Trichotillomania