Hi i am a 19 year old male and ive had a skin rash problem thats been bothering me for about 3 or so years. Ive never been to a specialist about the problem so i have no insight on it really. The problem seems to occur everytime im in water. When i go swimming it occurs about 15 minutes to a half hour later and when i take a shower it shows up almost right after, especially when its hot. Also when i seem to be doing a physical activity that causes me to sweat i get it. There are very small bumps surrounded by red blotches and the more i itch them the larger they become. Please help thanks.