The<unk>  is a model of medical classification where various psychiatric, neurological and/or medical conditions are described as existing on a<unk>  of conditions related to obsessive–compulsive disorder (OCD). "The disorders are thought to lie on a<unk>  from impulsive to<unk>  where impulsivity is said to persist due to deficits in the ability to inhibit repetitive behavior with known negative consequences, while<unk> ty persists as a consequence of deficits in recognizing completion of tasks." OCD is a mental disorder characterized by obsessions and/or compulsions. An obsession is defined as "a recurring thought, image, or urge that the individual cannot control". Compulsion can be described as a "ritualistic behavior that the person feels compelled to perform". 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<unk>  are sometimes referred to as<unk>  disorders.
Obsessive–compulsive spectrum
Gemütlose psychopathy
Type D personality
AIDS dysmorphic syndrome
Haltlose personality disorder
Externalizing disorder
Obsessive–compulsive personality disorder
Dependent personality disorder