Hi, I have a patch of bumps on the top of my tongue in the back of my mouth, both on the left and right sides. I use chewing tobacco and haven t been dipping much more than usual. I ve experienced this before a few times in the past 5 years, but it s more pronounced now than it has been.
Are the bumps in white or red color ?  If it is. As you already mentioned tobacco chewing. It may be leukoplakia or erythroplakia which is a precancerous condition