<s>[INST] at some point this morning I noticed a lump on the inside of my lower lip. (size of a pencil eraser) As the day progressed it increased in size and now involves the whole left hand side of my chin from lip to jaw. When I look at the inside of the lip I can see one tiny white dot where the lower gums join to the inner lip but no other discoloration. It is sore to the touch, but assuming it is due to the swelling. I have no dental issues and no trauma that I can think of [/INST] Hi, this is an infective condition and possibly an infected mucocele turned into an abscess!you need antibiotics and betadine / antiseptic mouth wash. Please revert to us after 2/3 days.in worse case you need to drain or squeeze it for permanent relief.wish you early recovery! </s>