I Have Been Having Swelling Of The Face Since I

I have been having swelling of the face since I had a stent placement on August 14th meds were changed and I was put on prednisone also have very large hives after sbout a week on prednisone all hives went away, I have been weaning off prednisone this week last night r side of my forehead and down the right side of my face had been seeeling