<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have a hard painful lump in my cheek mouth. At first I thought it was my jaw, so maybe an abscessed tooth, but my gum area is not sore. I can feel the lump in my cheek tissue for lack of a better description and it is very sore like a bruise.  <response>: Hi. Thanks for your query. As per your description of the lump: hard-painful lump which is sore like a bruise can be an inflammatory in origin. The cause could have been a bitten cheek or a small injury which has inadvertently gone into infection. I would advise:A course of an antibiotic and anti-inflammatory for 5 days should solve the problem. If no response within 2 to 3 days consult an ENT Surgeon Oral Surgeon to make sure that there is no serious underlying problem 