Hi, So I Have Had Red Bumps Or Dry Patches

Hi, so I have had red bumps or dry patches on my chest back and stomach for over a week now. I have recently started viguriously working out 4 to 5 times a week for the last month. I thought it was an exercise induced rash and I have been using triamcinolone acetonide cream USP, 0.1% cream for a week now and this also is not working. I also thought it could be heat rash but still unsure of those exact symptoms. I would really appreciate an opinion on what this could be and if I can treat it with or without medication. I'm leaving for Florida is 3 weeks and would like this to be cleared up by then. Thank you.