for a while now, I've been noticing i get this red rash all over my chest whenever I am in a warm environment, its just noticible by color, no texture or anything. It comes when I'm by a heater, getting my hair done[hairdryer ect] , or when i've been really hyper or something. It appears all over when i get out of the shower. However i haven't noticed it when i'm excersizing ??

Also this past week i got really itchy one day and got like little red dots on my legs and stomach after showering. i went to the sauna at the gym and have had hives all over my body for a couple days....and i've never had that happen in the sauna even if i've been in there for 30 min.

and sometiems ill get warm like..on one side of my face, or my ears or something its really random

So anyway could this just be like a heat rash of some sort, or should i see a doctor?

Thanks