Hello,
The symptoms can be due to a viral infection or hives. Treatment options include oral antihistaminics like Benadryl and Claritin or non sedating antihistaminics like zyrtec, topical steroids for skin rashes and itching
and oral steroids in more severe cases. I would suggest you to consult a dermatologist if the symptoms are severe.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your dermatologist. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.