heat rash to causes hives question KayKatelyn ? Heat rash How do I get my heat rash (I believe that's wat it is). I have a group of lil bumps precisely exactly where to hit my thighs and the pubis! How do I get rid of it, it hurts sooo negative, I'm on it antibotc Very best answer: the answer might from pureheart5110 irritations that when the thighs rub when you walk or run ... they are chaffing cream / gel for runners know greater? Leave your own answer in the comments!