Common signs & symptoms of canker sore


A shallow and painful ulcer or sore on the inside of the mouth. This makes eating and talking difficult.


If you’re experiencing new, severe, or persistent symptoms, contact a health care provider.

The symptoms include:

  • Major symptom is an ulcer inside the mouth, on the tongue or at the base of the gum
  • It has a red border and white or yellow center
  • Is shallow at the center
  • Starts with burning or tingling sensation
  • Fever
  • Pain
  • Cancerous sores may show symptoms like bleeding gums, loose teeth, trouble swallowing

Common treatment options

How is this diagnosed?


  • The exact cause is not known, but the factors which could trigger canker sores are
  • Stress or anxiety
  • The duration before or during menstruation
  • Injury accidental cheek or lips bite
  • Braces on teeth
  • Food allergies
  • Food or juice that has a lot of acid, such as orange juice
  • Iron, vitamin B12, or folic acid deficiency in diet

Questions to ask your doctor

Interested to know more? Check out the full article here

For informational purposes only. Consult a medical professional for advice. Source: Focus Medica.

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