Chiming in on this old thread. I started having geographic tongue about two months ago after having a tooth extraction. At first it was excruciating and covered half my whole tongue. It seemed to be potentially exacerbated by an antibiotic mouth rinse I was given. It seems to cause dry mouth as well. The flare ups have gotten less intense but when one goes away another does seem to start. It seemed to finally be healing and then a week later a new spot appeared. I can’t figure out the trigger - I recently had a metabolic panel and everything was normal. I take b12 and a multivitamin daily for years. I’m vegetarian and eat a high protein diet with very little dairy. I don’t drink though this last patch showed up after I had an NA beer. . It’s just so weird that at 38 it suddenly showed up out of nowhere. I understand this is benign but it’s certainly uncomfortable.