I have a rash(thinking hives maybe) that start a week ago on my leg, only a small cluster of tiny red water filled bumps, itchy at times. 5 days later it spreads all over and is not stopping. Its intense itching, swelling in some spots and some feel warm now. Have used tons of cortisone cream, soap for itching, taken allergy meds & motrin and nothing is seeming to help, just keeps spreading. I had several bug bites last weekend when I noticed the tiny rash so thinking Im having a reaction to the bites maybe but not sure since it didnt start spreading until 5 days later.