Hope, I get that too. It is sort of funny but very strange. I had a single mastectomy so I have one natural breast & nipple and one implant reconstructed breast with no nipple. (I replied to this post because the itching problem happens to some of us whether we've had reconstruction or not).
If it has been many years since a person was infected with TB, his or her initial skin test may be negative, because of waning immunity. Subsequent tests may be positive, however, because the initial tuberculin placement stimulates the immune response to the test.
A positive result does not mean that you have active TB disease right now -- the TB in your body could be either active or inactive. Active TB is bad for your health and contagious to other people, while inactive TB is not. And so, after a positive TB test, you will need further testing to determine whether you have active or inactive TB infection. A negative test result means that your system does not recognize TB, most likely because you have never been exposed to TB. After a negative result, further testing is usually not needed. AITC offers 2 types of tests for TB.