How Can Allergic Rashes Along With Itchy Eyes Be Treated?

In the last month I Have had allergy symptoms, rrash, itchy eyes, runny nose. it started with what looke like hives on my upper chest and neck. they were large pink and about a 1/2 inch apart. I have been on serel medications or th last few years Tramadol, ativan, vitamin D 51000uits weekly and B12 shots monthly. I had elbow surgery 2 weeks ago and location reacted with heat, very itcy and selled up twice its size. the surgeon said it was some kind of reaction probably from surgical scrub. I took Zyrtec and it went away in three days but the same symptoms come back every 2 or 3 days, the ZZyrtec helps with the eye and oral irritation but the extreme itching barely goes away.