Hi Dear, Welcome to HCM. Understanding your concern. As per your query you have symptoms of small bumps on tongue which is mainly because of combination of your medical problems along with smoking. Smoking causes damage of lingual papillae of tongue which leads to lingual papillitis. More so because of diabetes your body immunity got decreased and at a very high probability of growth of oral microorganisms. I would suggest you to stop smoking first of all so as your papillae and taste buds can rejuvenate and you can get rid of your problem. Chew mint leaves as they have anti inflammatory and antimicrobial properties. Eat sold and cold food and avoid hot, sharp, spicy food. Maintain good oral hygiene. Apply tea tree oil on these bumps with the help of cotton bud to getter faster relief. apply dologel on finger and rub in these bumps. Visit dentist once if your condition keeps on persisting. Drink alot water to main rehydration. Hope your concern has been resolved. Get Well Soon. Best Wishes, Dr. Harry Maheshwari