question: I m 16 this has been going for 5 months . When I rub my tongue on my bottom lip there seems to be a like a rough kinda sandpaper feeling on the inside of my lip . It has become a habit to constantly bite or chew at it. I asked a dentist about it a month ago and they said try not to bite it. I went maybe a day without biting and the patch just felt drier and more flaky .this has also developed on my upper lip but not as bad. This is just really bothersome and I want my inside of my lip yo feel normal like the inside of my cheek