Apply home treatment and call your health care provider if symptoms of canker sores persist or worsen, or canker sores recur more often than 2 or 3 times per year. If you have a mouth ulcer that lasts more that 2 weeks, you should see your doctor to rule out possible cancer. Call your health care provider if symptoms are associated with other problems such as fever, diarrhea, headache, or skin rash.
When to seek urgent medical care when I have Aphthous ulcer ?
Apply home treatment and call your health care provider if symptoms of canker sores persist or worsen, or canker sores recur more often than 2 or 3 times per year. If you have a mouth ulcer that lasts more that 2 weeks, you should see your doctor to rule out possible cancer. Call your health care provider if symptoms are associated with other problems such as fever, diarrhea, headache, or skin rash.