Hi Thanks for choosing HCM for your query, hopefully the suggestions given will be of great helpful to you. I have gone through the problem in your case, I am of the opinion that you are suffering from a condition which is associated with tobacco chewing and it is known as Leukoplakia. It is a condition in which thick, white patches form on the tongue and the lining of the cheeks of the mouth. Most patches improve on their own. However, if a biopsy comes back positive for oral cancer, the patch must be removed immediately. This can help prevent its spread. Small patches can be removed by a more extensive biopsy. This may include laser therapy or a scalpel. Hence, you are advised to consult an oral surgeon for the treatment. Take care, avoid using tobacco, tobacco use in any form is harmful to your health. Regards