Assuming that by "TB scar" you mean a scar from the BCG vaccine, the following can be told: A small, raised, red spot normally develops at the site of the injection within 2-6 weeks. This grows for a few weeks, widening into a circle up to 7mm in diameter with scaling, crusting and occasional bruising. The crusting is the one that causes the scar. So, in the end, the BCG scar means that you have been given the vaccine and are protected from tuberculosis and from potentially spreading it.
However, if by "TB scar" you mean a scar tissue detected in the lungs by an x-ray as a result of a previous tuberculosis infection, then the infection must be treated before you are allowed to work in a hospital in order to prevent further transmission.
If you had a previous tuberculosis infection, it is only up to the legislative procedure in the country where you want to work in a hospital or in the country where you want to go abroad, whether you are allowed to because the tuberculosis might stay dormant for a longer period of time and then appear again when the immune system weakens.
DISCLAIMER:
"Ask a Doctor" questions are answered by certified physicians and other medical professionals who volunteer
their time on eHealth Forum.
For more information about experts participating in the "Ask a Doctor" Network, please visit our
medical experts page.
You may also visit our Tuberculosis , for moderated patient to patient support and information.
The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician.
Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.
