Vigabatrin monotherapy in resistant neonatal seizures.

Seizures in a term infant with Ohtahara syndrome, associated with polymicrogyria, and a pre-term neonate with similar clinical features, failed to respond to conventional anticonvulsants, but were controlled with vigabatrin monotherapy. Another infant with Aicardi syndrome improved with vigabatrin. Autopsy in the first infant showed no evidence of intramyelinic oedema. The developmental outcome in the two survivors was better than expected for their condition.