Suggest Treatment For Itchy Rash On Various Parts Of The Body

Hi, I have a rash in various parts of my body, it has what appears to be small whiteheads, they are dry. It seemed to have started on my pelvis with a red area the size of a lid of a pen that was itchy and had a scaley look, a second one the same size appeared on my lower stomach area with same look. The scaley look has now vanished and it s simply a red mark that s itchy, it began around 2-3 weeks ago. I m 36, over the last 2 months I have been training hard every day, can t point to any change in products or food. Thanks