I am 66 years of age. I have had chronic idiopathic hives and dermatographism since my teens. Heat and irritation is a trigger. I take Zyrtec daily and Atarax when in a bad flair. When uncontrollable, I have been given Prednisone with quick results and relief. But if I am given Medrol Dosepack, the hives get worse. Does this make sense? I am now dealing with Lichen Planopilaris of the scalp with frontal fibrosing alopecia now and received scalp injections three days ago. I am covered in new hives that began within 24 hours of injection.