question: Hello doctor, My skin hurts and itches during the workout and also it gets hurt when I am out in the sun. When my body temperature is high, my skin starts to hurt and itch. After my body cools and heart rate gets stable, the itching and hurt stops. Especially in my face, chest and back, but I do not feel it in my legs. I have acne on my face, chest and back. I had acne-like two years ago, but I did not have these problems with my skin. Nowadays, especially this year in spring this problem appeared. I should point that I had been consumed Doxycycline and Trichopol, but I have already stopped consuming them. I have been using acne cleanser and I stopped consuming it also as my problem is not solved. I have stopped consuming these things a month ago. What do you think about it? What is that? How to cure that? I cannot go out for it because these symptoms start when I am out in sun. What do I need to do? How to treat it?