I have a red rash that appears as big bloches when I am in a hot shower and for some time after. I itch all the time (in and out of the shower) but not redness appears when I am dry. Bendaryl, atarax and anti itch creams are not helping what is this and how do I treat it. All my blood work is negative. Going to an allergist soon, no new soaps, creams, lotions, or sprays... help