It may be a recurrent aphthous ulcer.....generally it occurs due vit
B12 difficiency and poor oral hygiene.....but if it persists after medication then go to oral and maxillofacial surgeon......
Next Steps
use dentogel for 7 days twice daily.....with B complex tablet.....proper oral hygiene should be maintained.....
Health Tips
don't eat spicy food or fast food.....change your tooth brush and use mouthwash.....