Are hot or cold showers better for your skin if you have a rash?

I have this horrable rash all over my upper body and figured that either a really hot or really cold shower would be better for it and help soothe the pain.... which one? also do baking soda baths help? if so... how do i do it?|||you should go to a dermatologist if it persists. a cool shower is best|||Hot or cold may irritate depending on why you have the rash.|||If you have a rash, a hot shower will make it worse because it dries your skin out. A quick, cool shower is best, and then apply a good lotion immediately afterward.