Symptom structure of antipsychotic-induced obsessive compulsive symptoms in schizophrenia patients

►Natures of antipsychotics-induced obsessive-compulsive symptoms were investigated. ►Symptom frequencies were comparable to those of pure obsessive compulsive disorder. ►Symptom dimension was remarkably similar to that of obsessive compulsive disorder. ►We suggest common biological mechanisms underlying these two clinical conditions.