Lips Problem. What can i do?

I used to bite and peel off skin on my lips in childhood but from last 3-4 years when my lips are dried a white dry layer peels off from those areas that I used to bite in my childhood, mainly   the inner edges and tubercles of both the lips and when the skin peels off, i can see the new red skin on that area only and that hurts really bad while talking. After sometime it gets dry and repeat the process. When my lips are mositurised with water or lip balm, then there's a white layer on those areas. I tried everything but still not cured. I noticed as this is on tubercles and the areas where I used to bite in childhood, it's making affecting my lips shape, my lips shape worsening day by day. It's like that chapping isn't curing. The outer areas are normal, they never peel. Because of this my outer area of lips have black colour and normal linings whereas inner area have smooth red skin which looks weird. It's affecting my confidence in public, i really need a solution. What can I do?