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 response to a TB skin test does not mean that you have active TB. Rather it means that you have been exposed to TB and need further evaluation. A TB test is performed by injecting a small amount of fluid that contains components of the TB organism under the skin. If a patient has been exposed to TB before or has received the BCG vaccine, the patient will react to the injection by forming a hard, raised area at the injection site.