My cheeks inside the mouth are thickened. The skin goes through peeling cycles. They feel rough, then a day later peeling occurs. Skin may then feel normal for a day, then the cycle begins again. It also feels like I have a long, raised area parallel to my teeth on both sides of my mouth. The left side feels more pronounced to my tongue. The right side doesn t peel yet, but I think it will. The skin can be scraped off with a nail eventually. What might this be?