It could be a fissured tongue. visit your dentist to clinically examine and confirm Regards Dental Galaxy, Pune

Don't worry it may be fissured tongue/ cracked tongue. Quite normal phenomenon. Sometimes due to vitamin, iron deficiency.

Hello! Your symptoms — white or brown coating on the tongue, burning, and dryness — could be due to oral thrush (a fungal infection), tongue fissures trapping food, or even acid reflux or dehydration. I recommend visiting a dentist for proper diagnosis, as you might need antifungal treatment. Start cleaning your tongue gently and make sure you stay well hydrated. Also, avoid tobacco and spicy foods for now, as they may worsen the condition.

Hello This looks very normal. It might be due to maintaining more oral hygiene or some medication if you are using any.