Quetiapine-Induced extrapyramidal side effects in patients with Parkinson's disease: case report.

Although quetiapine is the antipsychotic of choice for the psychosis associated with Parkinson's disease (PD) and often is also helpful for sleep, we report two cases of quetiapine-induced extrapyramidal side effects. The patients described were unusual in their frailty and severity of illness and may not represent the majority of patients with PD.