SUMMARYWe report four patients with no preexisting movement disorders who developed oculogyric crises secondary to lamotrigine toxicity and had resolution of these crises after dose reduction. Episode numbers ranged from 1-20 per day and episode duration from 2 s to several hours. Mean plasma concentration of lamotrigine at the time of oculogyric crisis was 15.5 lg/mL, with a mean dose of 16 mg/kg per day.
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