Re: BURNING MOUTH? OR YEAST INFECTION? OR Lichen planus?
HI, I had just about everything you have had. Mine started late Oct, and ran through End of Jan, maybe February. My tongue was swollen & sore, roof of mouth burned, back of throat burned, gums burned. I saw my dr twice, and ENT once, a trip to ER when swelling got really bad, and dentist twice. They came up with no diagnosis for me either. I gave up on the drs, although the dentist seemd to be the best help of all of them. LIke you, I suspected thrush, lichen planus and various other conditions. It can be very frustrating to be so miserable without anyone helping at all. I had read somewhere that it was possibley due to an allergic reaction, which can cause the BUrning Mouth Syndrome. So I gave up all foods that 1)made it worse 2)had preservatives & other chemicals in them, 3) bought only tootpastes & mouthwashes that contained no alcohol, sulfates, chemicals. There are also good dry mouth tootpaste & mouthwashes that seemed to help me.
Mine also started with an itchy rash on legs and abdomen, which the dr prescribed Zyrtec for...and bang! That's when the mouth problem started. Zyrtec is very drying, and whatever causes BMS, whether viral or something else, took hold. It finally resolved, but I still avoid problem foods and chemicals as best I can.
I also have TMJ with night grinding & clenching of teeth, so that could account for the nerve theory, I guess.
Have you seen your dentist? A good oral exam by someone who sees mouths all the time might be helpful? And just an exam shouldn't be too expensive.
Best of Luck to you, I can totally relate to what you are going through.