Health encyclopaedia

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Causes of Mouth ulcer

Recurrent mouth ulcers may be due to:

• too little iron or a lack of vitamins in the diet, especially B12 and C,
• hormonal changes – many women get ulcers at the time of their periods,
• stress,· infections, particularly herpes simplex in children and some adults,
• Behcet’s disease, an auto-immune disease caused by the body attacking the cells lining the mouth,
• sensitivity to foods containing some preservatives and flavouring agents, such as cinnnamaldehyde,
• bowel disease such as Crohn’s disease or ulcerative colitis, coeliac disease (gluten sensitivity), and
• skin diseases such as Lichen Planus, Herpes Simplex or Pemphigus.

Some medicines can also cause mouth ulcers.

Recurrent mouth ulcers cannot be caught by kissing, or by sharing drinks and utensils, because they are not caused by an infection.

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