question: HI, I've been getting red spots on my inner upper gums for the last few months.  They come and go, they are not raised, are not canker sores or blisters, but they are bothersome, it's like a burn like sensation.  It's like if I ate something acid and my gums sting a little.  I thought that it could be burning mouth syndrome as I think I got this for a few weeks a few months ago, but these small red spots are really only localized on the upper inner gums.  What could they be?  I'm a woman in her 40's.