<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi, may I answer your health queries right now ? Please type your query here... I just found a small pea to olive sized knot above my collar bone in line with my left ear...for not sure how long some time now, I have had a hard knot below my left ear directly behind my jaw line...I didn t know if they were related?! I have a horrible nagging cough...constantly trying to clear my throat sometimes with phlegm... Please help!  <response>: Hi.it is best if you consult with a doctor, preferably a general surgeon, for medical and physical examination. Based from your description, it could be a possible cervical lymphadenopathy inflamed lymph node probably secondary to your recent upper respiratory tract infection. It will resolve as soon as your infection is controlled. A consult with your doctor will be of great help. Further diagnostic examination such as neck ultrasound, ct-scan or x-ray and subsequent management medical andor surgical if indications are found will be directed accordingly. Hope this helps. Good day!! Chat Doctor. 