Olanzapine-Induced Hypothermia: A Case Report in an Elderly Black Male Patient Diagnosed with Bipolar 1 Type Disorder

There are few reports that describe incidence of hypothermia in patients treated with olanzapine. We report a case of an elderly 83-year-old black male, readmitted to the state psychiatric hospital December 2023 due to psychiatric exacerbation after 6 months of successful discharge to community, who experienced a fall and profound hypothermia with bradycardia that resulted in a 10-day acute hospitalization in January 2024. Medical workup was unrevealing except for multivessel disease found on CT stroke study of the brain. When patient returned to inpatient psychiatric hospital, his psychiatric medications, including both quetiapine and olanzapine, were restarted at half the dose. The next morning, the patient was again hypotensive, bradycardic and hypothermic. For this patient, only the olanzapine was new upon the most recent admission, and thus this case report supports the other few reports already published, implicating olanzapine in the pharmacologic adverse effect of drug induced hypothermia.