I, too, have a "PPD" problem.
I had exposure to a uncle that had TB contracted most likely through cow's milk (seems odd, given todays world - but it was not that long ago.) So as the County Health was treating my uncle and he often stayed with us, we were tested often. Well about 5 years into surveillance, I had a marked reaction to the PPD - there were no margins or induration. Worse than that!
Within a short time there were hives, itching, wheezing - you get the idea.
Anyway, it was determined not to be a TRUE positive, but a TRUE allergy. There was some debate that it could be a component in the PPD, but the general medical consensus was - Why risk it? It has been over 20 years and I have NEVER had another PPD. There were never any symptoms, and I have never had a positive CXR.
Yet, given the industry I work in, it is rarely an issue. Yet, as the law of averages go - there was one employee health nurse that didn't believe it, etc.. She said it is impossible to be allergic. I offered all my documentation, and she then was insistent that "a PPD be placed". Well, at that point - I just backed down asked that she (contact Risk Management/get an ER physician to stand by) and then the HCF representative and Miss Infection Control can sign a statement that they take FULL responsibility for any reaction or consequences that I may suffer. Seems she did recall something about a true "PPD allergy" then. Whatever.
Well, that is my tale - do not do anything that may place your health at risk. I do end up having a CXR with some changes of employers - but, I keep good records and it is usually not a problem. I will not however, risk an anaphylactic reaction