I have heat rash, but it doesn't go away? Three years ago i went on holiday to greece and had heat rash on my chest. It's still here now! it comes and goes, sometimes disappears in the autumn, but when i went to majorca, it disappeared after about a week in the sun...its back again now! The doctor says its eczema, but im not sure...it's not dry and it stings really bad in the sun. it also appears blistered when it sees the sun! Can all of this come from a heat rash, and how can i get rid of it? Nothing seems to help, it's bright red, and it makes me self-conscious. it's not sore any other time apart from when it's warm and in the sun! I've been using diprobase, with no success cuz this is only really a moisturiser for eczema! HELP, its getting to summer and i wanna b able to wear low cut tops without feeling self-conscious!

Summarized question: How can I get rid of the rash on my chest that comes and goes and hurts when it's warm?