Thank-you very much for your enquiry. I’m sorry to hear that you’re having this issue. I wish I could give you a definite answer to solve your problem, but it’s quite challenging without having had the opportunity to have a look at your skin. The sun can quite easily cause sensitivity and rather nasty reactions, especially if you already have a sensitive skin. Sometimes the problem arises from wearing a sunblock with ingredients that don’t agree with your skin, and this causes reactions when you go into the sun. So the first thing, I would say, is to use a body product on a daily basis that will improve your skin’s integrity and healing capacity. I would highly recommend the Skin Medica TNS Body Lotion. I would then also recommend that you use a broad spectrum SPF (at least a 30 or a 50), that will not cause irritation or reactions. In that arena, I would recommend the Skin Medica SPF’s or the Heliocare SPF’s. Of course number 1, is to avoid the sun during the hours of 10am and 2pm. I would love to give you more help than that, so if you need more detailed advice and a better analysis of your skin, I’d suggest we try and have a look at your skin and take it from there. Hope to hear from you soon!