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

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

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