For the last 2-4 months, I have had a bright white spot on the middle of the side of my tongue. When feeling it, it has slightly more of a coarse surface than the rest of the tongue. There isn't really any pain associated with it but it has that feeling like it's been rubbing against my molars. It was originally one small spot, but from what I think I've seen, it almost looks like it's split off into two separate but connected spots. The spots together are not even the size of a dime. When I saw my primary physician a couple of months back, he said it looked like scar tissue and that we could look at it again when I return for my physical (coming up next month). He said at the time that we could do a biopsy (from what I'm told, not a terribly pleasurable process of taking a tissue sample from the tongue) but because of my relative youth (34), the fact that I'm not an alcoholic, and the fact that I don't smoke (outside of maybe one cigar every year or so), he wasn't terribly worried. I wasn't a high risk statistically for anything cancerous. When I saw my dentist last week, I asked him about the spot. He agreed that it looked like some sort of scar tissue and even speculated that I bit my tongue badly at some point (although I don't remember doing so). He said that if the white became a creamy yellow color or if the white patch became surrounded by an angry red border, then he'd seek a doctor's appointment immediately. But since that isn't the case, he figured I could probably wait a month or so until my next appointment with my primary physician. Nonetheless, I'm a little worried about the spot.....it has, in my opinion, gotten a tiny bit bigger over the last couple of months. Anybody have any idea what this could be? Should I be worried about this? Thanks in advance.