“Happy until the 10th day post-op - now i'm itchy (allergy?)”

I had a breast reduction 17 days ago and was so happy until the 10th day. I developed a redden area over both my breast from the bottom incision to the top of the nipple which is warm to touch and VERY itchy. I take benadryl but does not help. I saw the dr and steri strips were removed thought was that I was allergic to the adhesive, but still today have no relief.

I went to the doctor on day 10 and steri strips removed and told to take benadryl, still no relief and placed on an antibiotic, because I was had the sweats, keflex. I called the dr on day 6 of pills and stated no relief, redness has worsened, no blistering, some dimpling noted. Now placed on Medrol and I am guessing it takes 48 hours for this to work, but I am wondering if this is an allergy to sutures.