Last 6 Months I Have Had Severe Itching On Hands

Last 6 months I have had severe itching on hands and severe swelling and hives also my head gets welts hurts and itches next day gone. Have been on 5 rounds of prednisone when done starts all over again taking 5 milligrams a day of prednisone and Benadryl 2 tablets.i need relief.my em is YYYY@YYYY