Hello,
I can understand your concern. There can be two possibilities in your situation. First is, as you feel the sore at the different place in mouth, you may have been bitten by an insect while you were asleep and you may have developed allergies due to the poison of the insect presenting as swelling of the face. As you are not feeling any pain, I feel this as a more probable diagnosis. You can start an antihistamine like Levocetrizine 5 mg (Levocet) or
Loratidine 10 mg (Lorfast) once a day for five days. If it would be
allergic reaction, you must feel relief in the swelling after the fist dose of the medicine.
Alternatively, you might have an impacted or infected wisdom tooth which usually presents with this kind of swelling in patients. It could also be a decayed tooth which may have developed
abscess and swelling. In that case, you should visit a
dentist for oral examination, x-ray of the area involved to confirm the possibility. If that indeed is the case, then extraction of wisdom tooth or treatment of decayed tooth will relieve you of swelling.
The sore that you have developed in mouth can be treated by local application of Benzocain gel (Mucopain) 3-4 times a day over the ulcerated area, especially before meals to avoid pain and burning due to eating. It should heal within 7 days.
I hope this answer helps you. Thank you for choosing HCM. Let me know if you have follow up questions.
Best,
Dr. Viraj Shah