Epileptic fits or infantile masturbation?

Two infants, one girl, 5 months old, and one boy, 6 months old, presented with rhythmic and sustained motor activities of a stereotyped nature accompanied by moaning and grunting, facial flushing and altered awareness. The episodes occurred frequently and were initially believed to be epileptic. Normal electroencephalograms during the fits, lack of response to antiepileptic medication given to one child and careful reviewing of videotape recordings, enabled us eventually to diagnose the 'seizure-like' episodes as masturbatory activity.