Clinical and EEG response to clonazepam in four patients with self-induced photosensitive epilepsy.

Clonazepam was administered to 4 patients with an unusual form of photosensitive epilepsy. Two showed immediate and sustained clinical and electro-encephalographic (EEG) improvement. One showed immediate but unsustained clinical improvement, but there was no EEG improvement. One patient did not improve either clinically or on EEG.