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KMID : 0877220080120010052
Journal of Korean Epilepsy Society
2008 Volume.12 No. 1 p.52 ~ p.54
A Case of Epilepsy Exhibiting a Severe, Dose-Dependent, Memory Deficit after Zonisamide Administration


Abstract
Zonisamide (ZNS) has been proven as a safe, effective, and well-tolerated antiepileptic drug. We report an epilepsy patient who had a severe, dose-dependent, memory deficit after ZNS administration. A 65-year-old man visited our epilepsy clinic due to the occurrence of nocturnal convulsions. Despite the absence of seizures, he developed a severe impairment of verbal and visual memory functions after the increment of ZNS dosage from 200 mg/day to 300 mg/day. We substituted 1,000 mg/day valproic acid for ZNS. His cognitive performances were returned to original levels.
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