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What causes mouth ulcers?

Mouth ulcers, also known as canker sores, are common and can be caused by a variety of factors, including:

  • Trauma: Physical injury or trauma to the mouth, such as biting the inside of the cheek or lip, can cause an ulcer to develop.
  • Infection: Some viral or bacterial infections can cause ulcers to develop in the mouth.
  • Allergies: Some people may develop ulcers as an allergic reaction to certain foods or other substances.
  • Nutritional deficiencies: A lack of certain vitamins or minerals, particularly B-12, iron, folate, or zinc, can cause ulcers to develop.
  • Hormonal changes: Some people may develop ulcers during times of hormonal changes, such as during menstruation.
  • Autoimmune disorders: Some autoimmune disorders such as Bechet’s disease, can cause recurrent ulcers in the mouth.
  • Certain medications: Some medications can cause dry mouth, which can lead to ulcer formation.

It is important to consult with a healthcare provider if you have recurrent or severe mouth ulcers, so that the underlying cause can be identified, and appropriate treatment can be given. Additionally, if the ulcers are accompanied by other symptoms such as fever, difficulty swallowing or speaking, or swollen lymph nodes, it is important to seek medical attention as soon as possible.

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