Question: I am quite sure that my PPD skin test will be read as positive when I return this afternoon to the HD for my reading. I am in my last leg of nursing school and have received yearly 2-step ppd's, all of which have been negative. The injection site measures 22 mm, swollen, but without induration. I was wondering if spinal corticosteroid injections have the same potential to cause false +'s as oral steroids such as prednisone? I had a back injury on 12/31/10 with balloon kyphoplasty over a yr after the injury, when the T12 compression fracture hadn't healed and further compressed. My pre surgery labs came back with some abnormalities which were attributed to a skin rash that had recently and seemingly out of no where developed and a yeast infection. I have felt malaised, but wrote it off to stress, diet, lack of sleep with my late night studying and school stress. I recently found out that my bf of 3.5 yrs has regularly took weekend hiatuses to the red light district of Amsterdam while travelling for work. He recently spent 2 months in Kuwait where tb is not overly uncommon. The combination of learning of the multiple netherland prostitutes and incidence of tb where he regularly travels, etc, has me concerned. I would love to know if my series of spinal corticosteroids for my spine could possibly have any correlation to a positive ppd? I have found ample resources that indicate oral steroids.