What To Do For Rash On The Face, Hands And Legs?

Hello. I have a rash that started almost two weeks ago. First in my left hand then everywhere else. From face (now almost gone) to both arms and both legs. The ones on hand look very different from arms and legs. The ones on legs are circular and were first white in the middle but now brown. I thought it was ringworm. Arms look different-in the middle of each is dry skin. They itch terribly and my doc said perhaps ringworm or maybe even shingles. He took a biopsy but I ve been waiting (uncomfortably) for over a week -doc sent to lab but lab didn t accept my insurance so now it was just sent to another lab. Pls help-it s taken over my body.