title: Obsessive-compulsive disorder versus body dysmorphic disorder: a comparison study of two possibly related disorders.
abstract: The relationship between obsessive-compulsive disorder (OCD) and body dysmorphic disorder (BDD) is unclear. BDD has been proposed to be an OCD-spectrum disorder or even a type of OCD. However, few studies have directly compared these disorders' clinical features. We compared characteristics of subjects with OCD (n=210), BDD (n=45), and comorbid BDD/OCD (n=40). OCD and BDD did not significantly differ in terms of demographic features, age of OCD or BDD onset, illness duration, and many other variables. However, subjects with BDD had significantly poorer insight than those with OCD and were more likely to be delusional. Subjects with BDD were also significantly more likely than those with OCD to have lifetime suicidal ideation, as well as lifetime major depressive disorder and a lifetime substance use disorder. The comorbid BDD/OCD group evidenced greater morbidity than subjects with OCD or BDD in a number of domains, but differences between the comorbid BDD/OCD group and the BDD group were no longer significant after controlling for BDD severity. However, differences between the comorbid BDD/OCD group and the OCD group remained significant after controlling for OCD severity. In summary, OCD and BDD did not significantly differ on many variables but did have some clinically important differences. These findings have implications for clinicians and for the classification of these disorders.
authors.affiliation: Butler Hospital, Department of Psychiatry and Human Behavior, Brown Medical School, Providence, Rhode Island, USA. katharine_phillips@brown.edu
authors.forename: Katharine A
authors.initials: KA
authors.lastname: Phillips
authors.forename: Anthony
authors.initials: A
authors.lastname: Pinto
authors.forename: William
authors.initials: W
authors.lastname: Menard
authors.forename: Jane L
authors.initials: JL
authors.lastname: Eisen
authors.forename: Maria
authors.initials: M
authors.lastname: Mancebo
authors.forename: Steven A
authors.initials: SA
authors.lastname: Rasmussen
mesh_terms: D000328:Adult; D001008:Anxiety Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D001364:Awareness; D001828:Body Image; D015897:Comorbidity; D003702:Delusions / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D003865:Major Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D010552:Personality Assessment; D010554:Personality Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D013001:Somatoform Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D013405:Suicide / Q000523:psychology; D000092864:Suicide Prevention