Family practice : You probably have a canker sore caused by the herpes virus. It can last for several weeks. Usually painful. Hydrogen peroxide is helpful by dabbing on it several times a day. Anti viral medications are used but need to be started early on.
Answered 5/20/2013
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Need more info: Do you smoke or do beatle nut ? Or masala? If yes stop it right away.If no consult your doctor or dentist. You may have a sharp or broken tooth causing trauma. Persistent sores over 3-4 weeks could be precancerous , hence do not neglect and take expert opinion early. Better safe than sorry.
Answered 2/18/2015
5.1k views
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