Are all neonatal seizures true epileptic seizures?

The study of neonatal seizures, using time-synchronized video and electroencephalographic/polygraphic monitoring, has challenged the concept that all abnormal stereotypic behavior and motor activities in neonates should be considered epileptic. The use of anticonvulsants for the treatment of nonepileptic phenomena is inappropriate. In recent years, the etiologic distribution has changed: cerebrovascular accidents are recognized more often, whereas the percentage of seizures of unknown origin has significantly decreased.