welcome to HCM
read your prob, do not worry this is most common prob among all smokers. such type of burning ulcer can be healed spontaneously, but you have to protect from any irritation like smoking
, licking, kissing otherwise it take more time to heal. keep ypur lip mosturized n avoid any ointment or lipistik as it iretate that lesion. along with it you should take Tab of Zinc n microminrals, so that it will be healed early.
Dr aseem 9982583020