[Hydroa vacciniforme, a well defined photodermatosis (clinical, histopathological and photobiological aspects, apropos of 3 personal cases].

Three cases of "hydroa vacciniforme" are reported. The clinicopathological findings are emphasized. In two cases the patients presented keloids on the blister scars and in one of them there was association with focal epilepsia. The occular complications in the "hydroa vacciniforme" are uncommon but severe. The studies of cellular photobiology ("in vitro" irradiation of lymphocytes with U.V. rays) showed an imapirement of the ADN dark1repair, as demonstrated by other authors.