Aphthae: Not herpes, no culture needed. See a dermatologist. Various treatments when troublesome. Silver nitrate stick helps some people. Colchicine. Many others. Most need no treatment. If it persists, it is not aphthous lesion and may need biopsy.
Answered 5/24/2014
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Impossible to say: The "canker sore" you described, could in fact be a canker sore. If it last longer than 1 week , I would suggest you have it evaluated by a health care professional , preferably a dentist.
Answered 10/4/2016
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