<s>[INST] I had a stapectomy 10 days ago. I am an immune compromised patient. Yesterday a painful boil came up on the back of my neck. I am not running a fever. It is not worse or better today..... very painful though. I have put hot compresses on it and it helps the pain temporarily. Do I need to go to my Infectious Disease doctor tomorrow, or give it a few days? [/INST] Hi, dearI have gone through your question. I can understand your concern. You may have some abscess formation.  You should not wait. You should consult infectious diseases specialist and take a course of antibiotics.  You should go for culture and sensitivity testing of pus. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health. </s>