Regarding your message about burning mouth. Several years ago I had something similar, only it was just my tongue that had the burning feeling. No one could seem to figure out what was causing it, but I finally figured it out. It can come from unknowingly clenching your jaw while you sleep. This stops the circulaton to your mouth and you wind up with the burning feeling. If you are under any particular kind of stress right now, you might look at that as the culprit. It usually goes away when the stress goes away. Hope this info will be helpful.