I don't have the problem but there is a holistic type place here in Long Beach that talks about it and Dr Sklar treats it:
Hope this helps some.
www.sklarcenter.com

Home Sklar Center

https://www.sklarcenter.com

Thank you I will make sure to read it.

Yes, I had it for about a year. Very uncomfortable feeling. Mine was flaring up mostly in the mornings, my tongue was burning. No visible redness or irritation, or any sort of visible sign to explain the burning feeling. I have seen a dentist too. Found nothing alarming. I have tried vitamins, iron supplement, I switched to non alcohol content mouthwash (bioteene), also bioteene toothpaste. Avoided spicy food, or too hot or cold. The intensity of the pain/discomfort fluctuated throughout the day. On and off I have a very short flare up of the symptoms, feels like a have burned my tounge all over, but tolerable, mild.

That sounds awful
I don't have any burning in my mouth but definitely problems with my jaw and grinding my teeth when going thru a flare up.

I hope you find an answer to it or at least some relief.

Mad love and gentle hugs!