<s>[INST] I have had a persistent cough for over two months with drenching night sweats for about a month and a half. Within the past few days I have noticed a small lump in my armpit. It doesn t bother me other than itching constantly! I ve had two clear chest X-rays, negative ppd test and been on two rounds of antibiotics and a steroid ... What could possibly be the cause of these symptoms??? [/INST] Hi, dearI have gone through your question. I can understand your concern.You may have tuberculosis of lymph node or reactive lymph node enlargement. You should go for fine needle aspiration cytology or biopsy. It will give you perfect diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have any doubts then contact me at bit.ly/Drsanghvihardik, I will be happy to answer you.Thanks for using health care magic.Wish you a very good health. </s>