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From the Epilepsy Unit (Drs. Crespel, Berramdane, Coubes, Monicard, Baldy-Moulinier, and Gelisse), Hôpital Gui de Chauliac, Montpellier; and Centre Saint Paul-H. Gastaut (Dr. Genton), Marseille, France.
Address correspondence and reprint requests to Dr. Arielle Crespel, Explorations Neurologiques et Epileptologie, Hôpital Gui de Chauliac, 80 avenue Fliche, 34295 Montpellier cedex 05, France; e-mail: a-crespel{at}chu-montpellier.fr
Five patients with idiopathic generalized epilepsies (IGE) treated with lamotrigine (LTG) experienced exacerbation or de novo appearance of myoclonic jerks (MJ). In three patients, LTG exacerbated MJ in a dose-dependent manner with early aggravation during titration. MJ disappeared when LTG dose was decreased by 25 to 50%. In two patients, LTG exacerbated MJ in a delayed but more severe manner, with myoclonic status that only ceased after LTG withdrawal.
Received January 27, 2005. Accepted in final form May 16, 2005.
Disclosure: The authors report no conflicts of interest.
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