Hie.. in the picture , if u also have noticed .. teeth are getting yellow.. kindly get them cleaned.. and also check for any sharp edges of the teeth.. which keeps on irritating your tongue.. leading to trauma to the tongue.. or is u have any history of tobacco or smoking, it will lead to burning sensation too proper clinical evaluation is required to come to an conclusion..

Stop tobacco or smoking or alcohol immidiately if you are habitual of anyone or all of these. For proper treatment you have to visit your trusted dentist firstly ASAP for curing.

The tongue maybe undergoing trauma from your teeth while chewing. Consult nearest dentist to check for any sharp points on your teeth which maybe causing the injury.

Hie..if u are a smoker or tobacco chewer then immediately quit these habits beacuse they cause burning sensation.. ..get your teeth to be cleaned ...consult a dentist may be one of ur teeth is sharp that irritate ur tongue ...