Minor injuries:
Accidentally biting the tongue or inside of the cheek.
Injuries caused by using a toothbrush.
Burning the mouth with very hot foods and drinks.
Nutritional deficiency: Deficiency of vitamin B12, folic acid, iron, and zinc in the body can cause mouth ulcers.
Psychological stress: Severe mental stress and anxiety increase the risk of mouth ulcers.
Digestive problems: Stomach upset, constipation, and gas are associated with mouth ulcers.
Food allergies: Some people are allergic to tomatoes, citrus fruits (lemon, orange), chocolate, and extremely spicy foods, which can cause mouth ulcers.
Hormonal changes: This is seen during hormonal changes in women (e.g., menstruation).
Medications: Mouth ulcers can also occur as a side effect of some medications.
Reduced immunity: When you get sick, the body’s immune system weakens, leading to mouth ulcers.
