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A nationwide nested case‐control study of new‐onset obsessive‐compulsive disorder following antipsychotics use in schizophrenia

A substantial proportion of patients with schizophrenia suffer from comorbid obsessive‐compulsive disorder (OCD) possibly associated with antipsychotics. However, little is known about the comparative risks of the antipsychotics. The present study aimed to investigate the risk of new‐onset OCD following the initiation of different antipsychotic medications for schizophrenia relative to haloperidol.