When ever I have a shower I get real itchy red spots all over my back and chest, I have tryed every kind of soap and shampoo their is but nothing helps, the same thing happens if I start to sweat.. I just start itching uncontrollably, :cry:

is it that i'm allergic to the laundry detergent and when I sweat it leeks in?

What can I do about it? I would love just once to have a nice long hot bath without going insane with itching.