thanks for your query,
i have gone through your question, the features looks like you have fissured tongue
superadded with candidal infection (fungal) which can cause burning sensation...use of candid mouth paint will help you..use topical anesthetic
like anabel or mucopain gel can be used before consuming food that reduces burning sensation....you should also get your blood investigations to rule out anemia, in anemia anemic stomatitis
can also cause this kind of condition...so maintain good oral hygiene
, consume more fruits and vegetables, do saline gargling twice daily for a week..
i hope my answer will help you