Hi,
Your sun sensitivity could be triggered by certain medications or chemicals found in your colognes/perfumes, cosmetics, skin lotions, and even sunscreens. It may also be caused by pre-existing diseases such as rosacea, lupus or atopic dermatitis. Cool compress, cortisone cream or over-the-counter antihistamine medication may also help. However, it is recommended to prevent too much sun exposure and to use sunscreens or UV protected clothing.