Prevalence of psychotic disorders in patients with obsessive-compulsive disorder.
BACKGROUND
The co-occurrence of obsessive-compulsive disorder (OCD) in patients with schizophrenia and related disorders has been increasingly recognized. However, the rate of psychosis comorbidity in OCD patients has yet to be systematically evaluated.


METHODS
The prevalence of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition psychotic disorders was evaluated in 757 subjects consecutively referred to a specialised diagnostic and treatment facility for OCD. Demographic and clinical characteristics were assessed.


RESULTS
Thirteen OCD patients (1.7%) also met the DSM-IV criteria for a psychotic disorder. We found no significant differences in clinical characteristic between OCD patients with and without a psychotic disorder, although patients with OCD and a psychotic disorder more likely used illicit substances and more likely were male.


CONCLUSIONS
Relatively few patients referred to a specialized treatment OCD center suffer from a psychotic disorder.
de Haan
Lieuwe
L
Department of Psychiatry, Academic Medical Centre, Amsterdam. l.dehaan@amc.uva.nl
Dudek-Hodge
Christine
C
Verhoeven
Yolanda
Y
Denys
Damiaan
D
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D009426:Netherlands / Q000453:epidemiology; D009771:Obsessive-Compulsive Disorder / Q000150:complications / Q000453:epidemiology*; D011569:Psychiatric Status Rating Scales; D011618:Psychotic Disorders / Q000150:complications / Q000453:epidemiology*; D012559:Schizophrenia / Q000150:complications / Q000453:epidemiology; D055815:Young Adult