I have tried everything nothing works , had it for over yr, painful

chew gum helps some

I have the exact same problem, looks like I need to get some B12. Sometimes my tongue is so dry and stuck to roof of my mouth in the middle of the night that it scares me. Thanks for the tip!

I have had a burning tongue. Vitamin b12, b complex and folic acid help

This very well be thrush. If you take a lot of antibiotics or possibly a steroid inhaler, one can get thrush. I have had it several times and it has not been related to my Parkinson's. It is very painful. The doctors prescribe a thick, yellow medicine that you swish and swallow. It takes awhile but it gets rid of the thrush. Too much antibiotics or steroids can start the thrush--soreness, white on your tongue. I'm certainly not a doctor, I'm just sharing my experiences with thrush. Good luck.