Are there side effects or risks from having the PPD skin test?
The test typically does not produce side effects. There is a very slight risk of having a severe reaction to the test, including swelling and redness of the arm, particularly in people who have had tuberculosis or been infected previously and in those who have previously had the BCG vaccine. Allergic reactions are also rare complications.
Live bacteria are not used in the test, so there is no chance of developing tuberculosis from the test.