I have so far received 2 cortisone injections for back and hip pain. After the first injection I mentioned to the doctor that hives had appeared and lasted for a couple weeks; she injected me again anyway. The rash of hives took about five to seven days to appear. They are all over both of my legs and arms. I am miserable. The itching and burning is like nothing I've ever had, and it's lasted now for more than three weeks! What can I do??