Brief Answer:
Explained

Detailed Answer:
Hello and welcome

I appreciate your concern

Based on the image you uploaded and the history , it's likely to be aphthous stomatitis. Doxycycline, b complex vitamins and folic acid supplements help heal such lesions in time. However with a prolonged history, and failure to resolve, an oral brush biopsy biopsy should be considered in consult with an oral physician to rule out the posibility of malignancy.




wishing you best of health

Thanks

---