<s>[INST] I am 19 years old and have been a smoker since i was almost 16. i have noticed over the past couple months a hard lump inside my bottom lip.its not sticking up like a pimple or anything but if you squeeze it on both sides you can feel it. my cheeks have had a lot of pain lately and my gum line has been bothering me. just wonderin if you could help me out with any good newsthank you! [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have painful hard lump inside bottom lip is mainly because of frictional keratitis and personal dermatitis of oral mucosa due to continuous irritation from smoke fumes. I would suggest you not to panic about it. Stop smoke immediately to prevent exaggeration of symptoms as it could convert to a malignant oral lesion as well. Maintain oral hygiene by brushing and flossing daily. Do Listerine mouth wash rinses.  Your symptoms will resolve in 10-14 days.  Chat Doctor.  Avoid hot, sharp, spicy food. Take ibuprofen if it is tender to touch. If symptoms keeps on persisting visit oral physician once and get it biopsied and examined. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>