Hello. This has only been a problem for me this year. It was never an issue prior to that. If I run or bike with a shirt on, I get very intense itching and irritation of my upper body, but primarily my chest and sides. If i run without a shirt on, there is no symptoms. The symptoms will last up to a week! I've tried cotton shirts and even underarmour shirts don't make a difference. I was thinking about trying body glide which should reduce the irritation but I'm not sure if there is so other thing I'm overlooking. Anyways, it looks like just a red generic rash. On my sides, it seems as if 2 or three hair follicles are irritated. They are raised and almost blister like but very small - the size of a pin head. This is only after exercising 1 hour.
Any suggestions? This really *****.