How do the you contract bola skin rash. I was just diagnose with it. It started with a red itchy rash, then blisters formed, and it is very itchy and it burns when I scratch it. It started on my elbows, I know have it on my abdomen, ear, nose and it is starting on my knees. I have started on a five week program of prednisone. have been referred to a dermatologist.