[Parkinson disease and photosensitive epilepsy].

A 58 year-old man with a 4-year history of Parkinson's disease developed a myoclonic syndrome with photosensitivity. The photo-convulsive response progressively worsened when therapy with levodopa, carbidopa and biperiden was interrupted. A marked reduction of the photosensitivity was obtained with bromocriptine. This case suggests that both diseases are correlated with a multiple degenerative process of the dopaminergic inhibitory pathways.