My son has had a cold sore on the side of his mouth now for over amonth now and over the last two weeks he has developed an enlarging lump under his chin that is painful when palpated? What could this be? The Lump has gotten much larger over the last 2 weeks?Could if be an infected salivary gland in association with the cold sore?Thanks,Dave
Hello, thank you for consulting with Chat Doctor. It is not necessary that this ulcer is just a cold sore, it can be a traumatic ulcer, or an ulcer because of tobacco habit or an ulcer related to some general health. It is definitely an infected ulcer that is why a lump which you are mentioning has formed, as it is an enlarged lymph node. Better that once you should visit a good oral medicine specialist and get the ulcer examined. Hope it will help you.