Hello, I had a rash and went to the urgent care. They gave me a steroid shot and prescribed steroids for the following days. The rash went away for a day but than came back. It started on my lower legs and than my arms. I went back to the Dr and he said it looked like and allergic reaction. He prescribed a lotion to help and recommended Benadryl. I have been taking it for almost a week and the red bumps reappear, less and less. They go away and than they come back. Now I have noticed them on my hips and lower back. Please help me. I am on immunosuppressants since I had a kidney transplant 7 months ago. Would this cause the reaction/allergy to last longer to clear up?