Investigates the nature and severity of obsessive-compulsive disorder (OCD) symptoms in a sample of Egyptian outpatients and determines that impact of culture on their symptomatology. The comorbidity of OCD and the premorbid personality patterns prevailing in the studied sample were also investigated. 90 Ss (aged 12-42 yrs) with OCD were assessed using the Yale-Brown Obsessive-Compulsive Scale (W. K. Goodman et al, 1989). Moslem rituals were different in quality and had a higher frequency than the Christian rituals, emphasizing the role of a ritualistic Islamic upbringing. One third of Ss had a comorbid depressive disorder; 14% had obsessive personality disorder; and 34% had paranoid, anxious, or emotionally labile personality disorder.