<s>[INST] I have been having an allergic reaction to something. It started 3 days ago. I was treated on Saturday morning with an injection of Decadron and all the swelling and rash areas went away. They started coming back the next day Sunday and today Monday. I am taking oral Predisone but the rash continues to pop out on different parts of my body. I have not done anything different in regards to food or anything. [/INST] Hi, You seem to have Hives or Acute Urticaria. Food and food preservatives, infections, drugs, alcohol, etc.,  are common causes of hives. I suggest you to take an oral antihistamine, e.g., Tablet Cetrizine once a day for a few days. In addition, I suggest you to use a soothing lotion, e.g., Calamine lotion. Usually a week or 10 days of an oral antihistamine is sufficient for the treatment of hives. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Kakkar S. </s>