Could A Canker Sore Persists For A Really Long Time Causing Facial Swelling?
Detailed evaluation is needed.
Detailed Answer:
Thanks for the query.
According to your description the lesion seems like a chronic canker sore or condition like eruthroplakia. It could have been better if you attached a picture along with the query.
As of now you can try the following
1.Apply topical steroid ointment like triamcinolone mouth paste.
2. Have diet rich in fruits and vegetables.
3. Take multivitamin tablets like supradyn.
If the lesion persist consult an oral pathologist and take a biopsy.
The lumps in the armpit could not be attributed to this. Generally inflammation in the mouth cause enlarged lymph nodes in neck, not in armpit. However you can consult a GP if the lump persist for long.
Wishing you good health.
Thanks