<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hello, I have a lump on my jawline that is hotter than the rest of my body and about the size of a large gumball. What might this be? I was sick with a cold last week and have been stressed this week. I have had acne cysts in the past but this does not feel like it.  <response>: Hi, dairy have gone through your question. I can understand your concern. You may have some enlarged submandibular lymph node or submandibular salivary gland infection. It can be acute or chronic siledenitis. You should take a course of antibiotics like amoxiclav or CEA Chat Doctor. If it doesnt respond to treatment then biopsy diagnosis is advisable. Consult your doctor and take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using Chat Doctor. Wish you a very good health. 