• We assessed 96 patients with obsessive-compulsive disorder for DSM-III personality disorder diagnoses with a standardized interview instrument (Structured Interview for the DSM-III Personality Disorders). Fifty patients (52%) met criteria for at least one personality disorder, with mixed, dependent, and histrionic personality disorders most frequently diagnosed. Compulsive personality disorder was diagnosed in only 6 patients (6%), 5 of whom had had onset of obsessive-compulsive symptoms before the age of 10 years, indicating that DSM-III compulsive personality disorder is not invariably a premorbid condition for the development of obsessive-compulsive disorder. Schizotypal personality disorder, at 5%, was found to be less common than in past samples, reflecting differences in either assessment methods or sampling.
Baer L, Jenike MA, Ricciardi JN, Holland AD, Seymour RJ, Minichiello WE, Buttolph ML. Standardized Assessment of Personality Disorders in Obsessive-Compulsive Disorder. Arch Gen Psychiatry. 1990;47(9):826–830. doi:10.1001/archpsyc.1990.01810210034005