I went to high school with a girl who had Porphyria, who got dispensation for a completely tinted vehicle, special tint was added on windows of all classrooms she was in, and special filters over the lights in the ceiling. She wore long pants and long sleeves all the time, gloves, hat, had to do everything possible to minimize sunlight exposure....or you are someone who is allergic to sunlight (is that even a thing?)...