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Seizures Associated with Quetiapine Treatment

Assistant Professor of Neurology, Department of Neurology, Faculty of Medicine, Mersin University, Mersin, Turkey

Serhan Sevim, MD

Assistant Professor of Neurology, Department of Neurology, Faculty of Medicine, Mersin University

Hakan S Kaleagasi, MD

Senior Resident, Department of Neurology, Faculty of Medicine, Mersin University

Reprints: Okan Dogu MD, Mersin Universitesi Hastanesi, Noroloji AD. Zeytinlibahce cad. Mersin 33070, Turkey, FAX 90 324 3374305, okandogu{at}mersin.edu.tr

OBJECTIVE: To report a case of seizures in a patient with Alzheimer disease, who was receiving quetiapine for psychoses.

CASE SUMMARY: A 75-year-old white man with Alzheimer disease was observed to have seizures while receiving quetiapine 500 mg/d and carbamazepine 200 mg/d. He had been taking quetiapine for 18 months prior to the event. No other toxic, metabolic, or anatomic abnormalities were identified to explain the seizures. After cessation of quetiapine treatment, the patient remained seizure free. An objective causality assessment revealed that the adverse drug reaction was possible.

DISCUSSION: The patient was taking a relatively high dose of quetiapine. An increased risk of seizures has been associated with Alzheimer disease. Using a relatively high dose of quetiapine may have resulted in seizures in our patient with Alzheimer disease.

CONCLUSIONS: As with other antipsychotics, quetiapine should be used cautiously in elderly patients with conditions that can lower the seizure threshold, and special monitoring should be performed for this serious adverse effect.

Key Words: Alzheimer disease, quetiapine, seizure

Published Online, June 16, 2003. www.theannals.com, DOI 10.1345/aph.1C516

This article has been cited by other articles:

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