Once a child is diagnosed with epilepsy, a primary concern is whether or not the child's behavior and cognitive abilities will be affected by the disease, by the drug prescribed for seizure control, or both. Direct cognitive effects by the epileptic condition have been described. On the other hand, cognitive effects in epilepsy have been attributed to antiepileptic drug therapy. Valproate is an antiepileptic drug of choice in managing the commonest childhood epilepsy syndromes. Although frequently prescribed in pediatric neurology practice, there have been relatively few studies investigating the cognitive effects of valproate therapy in children. Cognitive effects of valproate reported in normal adult volunteers and in adults with epilepsy cannot be generalized to the pediatric population. The results of investigations on children are less conclusive. Guidelines for antiepileptic drug trials in children have recently been formulated. Carefully designed studies are required in determining the cognitive effects of valproate in the pediatric population. Neuropsychological measures that are likely to assess subtle changes in higher brain functions crucial to learning in children should be employed. We propose a test battery to assess for cognitive changes associated with anticonvulsant therapy in children.

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