Abstract
Anti-seizure medications that block sodium channels are generally considered contraindicated in Dravet syndrome. There is, however, considerable debate about the sodium-channel blocker phenytoin, which is often used for status epilepticus, a frequent feature of Dravet syndrome. We describe four patients with Dravet syndrome in whom long-term phenytoin therapy reduced seizure frequency and duration. In two patients, phenytoin produced prolonged periods without status epilepticus for the first time. Attempting to wean phenytoin in all patients after 1 to 20 years of use resulted in seizure exacerbation. Reintroducing phenytoin improved seizure control, suggesting phenytoin is beneficial in some patients with Dravet syndrome.
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