title: Obsessive-compulsive disorder in patients with schizophrenia or schizoaffective disorder.
abstract: OBJECTIVE
  The authors evaluated the frequency of DSM-III-R obsessive-compulsive disorder in patients with a primary diagnosis of schizophrenia or schizoaffective disorder.
  
  
  METHODS
  Patients with schizophrenia (N = 52) or schizoaffective disorder (N = 25) were evaluated for the presence of obsessions and compulsions by means of the Structured Clinical Interview for DSM-III-R, the Yale-Brown Obsessive Compulsive Scale, chart review, and contact with the treating clinicians.
  
  
  RESULTS
  Six (7.8%) of the 77 patients met the DSM-III-R criteria for both obsessive-compulsive disorder and schizophrenia or schizoaffective disorder.
  
  
  CONCLUSIONS
  These findings suggest that obsessive-compulsive disorder occurs in a substantial percentage of patients with schizophrenia or schizoaffective disorder. The addition of medications targeted at obsessive-compulsive disorder may be beneficial to these patients but requires systematic evaluation.
authors.affiliation: Department of Psychiatry and Human Behavior, Brown University, Providence, R.I, USA.
authors.forename: J L
authors.initials: JL
authors.lastname: Eisen
authors.forename: D A
authors.initials: DA
authors.lastname: Beer
authors.forename: M T
authors.initials: MT
authors.lastname: Pato
authors.forename: T A
authors.initials: TA
authors.lastname: Venditto
authors.forename: S A
authors.initials: SA
authors.lastname: Rasmussen
mesh_terms: D000328:Adult; D015897:Comorbidity; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009771:Obsessive-Compulsive Disorder / Q000175:diagnosis / Q000453:epidemiology*; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000175:diagnosis / Q000453:epidemiology*; D012559:Schizophrenia / Q000175:diagnosis / Q000453:epidemiology*