Hi, one of my friend was addicted of chewing tobacco from last 10 years, one day he got pain so he leave his habit after leaving tobacco he got ulcer in whole mouth tongue and throat, doctor told him it's a withdrawl effect but that after taking medicine all ulcers decreasing day by day. But at that side from where he put tobacco tgere us a ulcer on tongue in corner and its not going from last one month. So please advice me now what to do.

See the doctor again?