Sponge like rash about size of hand on my stomach. Hurts a little to the touch and has a mild itch. Skin is like Jello, very sponge-like. Can't remember anything I've done differently recently. Started on right side of belly and within hours covers all. Have had for 2 days. Now am getting other areas, not as big, on shoulder, forearm, and upper thigh. Any ideas?