Causes of Mouth Ulcers

Mouth ulcers, also known as canker sores, can be caused by a variety of factors. Some common causes include:

  • Minor Injury: Accidentally biting the inside of your cheek or lip, or brushing too hard with a toothbrush can cause a small ulcer to form.
  • Certain Foods: Acidic or spicy foods, such as citrus fruits, tomatoes, chocolate, and coffee, can trigger mouth ulcers in some people.
  • Stress or Hormonal Changes: Emotional stress or hormonal shifts, such as those during menstruation, can sometimes lead to the development of mouth ulcers.
  • Nutritional Deficiencies: A lack of essential nutrients, particularly iron, vitamin B12, and folate (vitamin B9), can contribute to mouth ulcers.
  • Allergies or Sensitivities: Certain individuals may develop ulcers in response to specific allergens or irritants, such as certain toothpastes or mouthwashes.
  • Autoimmune Disorders: Conditions like celiac disease or Behçet’s disease, which involve immune system dysfunction, can cause recurring mouth ulcers.
  • Genetics: There may be a genetic predisposition to developing mouth ulcers, as they often run in families.
  • Smoking: Tobacco use can irritate the lining of the mouth and contribute to the development of ulcers.

It’s important to note that while most mouth ulcers heal on their own within a week or two, persistent or unusually large ulcers, or those accompanied by other symptoms like fever or swollen lymph nodes, may require medical attention from a local dentist or other local medical professionals.

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