Again, thanks for your thoughts. I've thought of that and I'd love it to be allergic. I see my internist next week and will be following up on all suggestions. I think I have 2 real issues. First, I'm not sure I would have paid any attention to the first lesion if it hadn't been right where my tongue rests. I worry that I didn't notice it soon enough. I've been too cavalier about my mouth. Second, both my dad and brother are dentists, so I worry because of what I know from them.