Ever since I can remember I would get headaches if it was very sunny and bright outside and if I was outside. I got sunstroke when I was in junior high and I think that is why I am now so sensitive to the sun. But I can prevent it. I have to wear sunglasses and a hat but if I know that I am going to be in the sun I have to take a motrin before I leave because it will usually prevent the headache from happening too.