title: The paradox of quetiapine in obsessive-compulsive disorder.
abstract: Schizophrenia and obsessive-compulsive disorder (OCD) have historical, clinical, and epidemiological links. The clinical use of atypical neuroleptics (ie, dual serotonin-dopamine antagonists) to treat both conditions sheds a new light on them. We report the first two cases of obsessive-compulsive symptoms (OCS) induced by quetiapine in schizophrenia patients. A case of successful augmentation by quetiapine in refractory OCD is also presented. A review of the literature on OCS induced by atypical neuroleptics follows. This paradoxically induced OCD symptomology in schizophrenia patients administered atypical neuroleptics is discussed from new pathophysiological and clinical perspectives. The discussion emphasizes the prognostic implications of OCS in schizophrenia and available therapies for this comorbidity.
authors.affiliation: Department of Psychiatry, Louis-H LaFontaine Hospital, Montreal, Canada.
authors.forename: Constantin
authors.initials: C
authors.lastname: Tranulis
authors.forename: Stephane
authors.initials: S
authors.lastname: Potvin
authors.forename: Martin
authors.initials: M
authors.lastname: Gourgue
authors.forename: Gerard
authors.initials: G
authors.lastname: Leblanc
authors.forename: Adham
authors.initials: A
authors.lastname: Mancini-Marie
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Stip
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects / Q000627:therapeutic use*; D001569:Benzodiazepines / Q000009:adverse effects* / Q000627:therapeutic use; D003024:Clozapine / Q000009:adverse effects* / Q000627:therapeutic use; D003987:Dibenzothiazepines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000139:chemically induced* / Q000188:drug therapy*; D000077152:Olanzapine; D000069348:Quetiapine Fumarate; D012559:Schizophrenia / Q000188:drug therapy
chemical_list: D014150:Antipsychotic Agents; D003987:Dibenzothiazepines; D001569:Benzodiazepines; D000069348:Quetiapine Fumarate; D003024:Clozapine; D000077152:Olanzapine