ve looked online for what it could be and I believe that the
rash I experienced after running was a
heat rash and I know its possible to get pimples that are sometimes nicknamed "sweat bubbles" in addition to heat rashes, which is what I think my bump is because I do sweat more than the average male. The bump doesn't get any bigger, it doesn't itch, it doesn't burn, it doesn't open up and scab over, it just sits there.