What is the main cause of canker sores?

The causes of canker sores are still widely unknown. Among reasons most often felt:
  • Oral traumas and oral hygiene
  • Stress
  • Some specific foods
  • Weak immune system
  • Giving up smoking
  • Menstrual cycle
  • Specific drug allergy
  • Diseases such as Crohn's disease or Behçet's syndrome
  • Some viruses (AIDS)
  • Chemotherapies in cases of cancer

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In the USA, 4 million people have canker sores more than once a month

Tip of the day:

Try a preventative treatment rather than a local treatment which does not treat the causes of your mouth ulcers