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A 20-year-old female asked:

I just had a 2nd round ppd done for work (@ a rehab) and the area is red and about a 1/2 in wide. last time it returned to normal w/in 2 hrs. tb+?

1 doctor answer3 doctors weighed in
Dr. Keith Robinson
Pulmonology 23 years experience
PPD: Good news is, its probably not active tb. Bad news, sounds like latent TB infection. A frank discussion with infection control, chest x-ray, and lab work is needed to discuss latent TB infection.
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Last updated Jun 10, 2014

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