19 year old healthy male, but In the middle of April I had gotten mono, right after I started feeling better, whenever I would take a hot shower or workout, I would get small red dots all over my skin and body usually on back, chest, and arms. They are not itchy and usually go away after I stop working out or cool down. Don't know what's causing them or how to control them but would like to know since it looks very awkward whenever I am working out and my skin breaks out and has made me very self conscious about it. Thanks in advance for all the replies.