Hi sir...
Your history seems it may be traumatic ulcer....
In medical terms, ULCER is the break in continuation of epithelial suface layer...
Cause for traumatic ulcer:
lip biting, vigorous brushing, trauma from sharp teeth,orthodontic braces...
Next Steps
Treatment:
** Removal of irritant or cause(hot and spicy food)
**consumption of soft bland diet
**Application of topical corticosteroids
**Application of topical anesthetic( dologel,hexegel)
Health Tips
kindly visit nearby dentist immediately to rule out cause and management