What Causes Nodes On Head And Neck When Suffering From Primary Complex ?

Hi, my son is diagnosed with primary complex when he is one, Son is now 3.. Medication is given for 9 mos. According to his pediatrician it s treated. But this past few weeks I feel some nodes on his head and behind his ear, i consulted another pediatrician and ask id that s normal, my son undergone xray, and it according to his new pediatrician the xrays shows that primary complex is still active and still need to medicate, is it possible that a primary complex may reoccur? Please help! I don t want my son to take anti tb meds I m afraid that it may damage his liver. Are there any other confirmatory test aside from xray and mantoux?