The discomfort of the inner wall of the mouth with numbness may be lichen planus, oral leukokeratosis, oral leukoplakia and so on. 1. lichen planus: common clinical manifestations of the mucous membrane of the inner wall of the oral cavity for the white reticulate stripes, patients feel rough mucous membrane, wood astringent feeling, burning sensation. 2. Oral leukokeratosis: localized white keratinized patches or plaques on the oral mucosa caused by long-term mechanical or chemical stimulation, with self-consciousness of a numbness of the mucosa. 3. Oral leukoplakia: unexplained white patches of the oral mucosa, can also be manifested as numbness. Oral lining uncomfortable numbness may also have other pathological factors, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.