Hi doc from few months or you can say from last year I have notice that roof of my mouth is white and smooth which was not earlier. And I have also notice that tongue is also turns white except tip of tongue. Just wondering I am the only who have this issue. Is any thing wrong here. One more thing I don't have any issue with this but I have a bad taste through out the day. And I observe that when our tongue get burn some burning sensation is there always.