I have had similar symptoms. No burning tongue though. I was having trouble swallowing and had a burning throat - couldn't eat basically. I was diagnosed with GERDs and was given Nexium to which may body reacted adversly and then Ranitidine which was not helping. I had an endoscopy which revealed no apparent damage or hernias. They only tried to represcribe Nexium (which I did not want) and then double my dosage of Ranitidine.
I found that Apple Cider Vinegar helped after meals. Which put me on to low-stomach acid? Decided it was also time to get food Allergie/Intolerance testing done. All this has been nursing me back to good health. I have discovered food intolerances (which I now avoid), I take Apple Cider Vinegar when I do have heartburn (which is once every two weeks now) and the food allergy Dr. put me on a Candida Diet which has been helping immensly.
I do strongly believe they can be related! Good luck.