Minor injuries:
Accidentally biting your cheek or tongue.
Injuries caused by using a toothbrush.
Burning your mouth after drinking very hot food or drinks.
Nutritional deficiency: Deficiency of vitamin B12, folic acid, iron, and zinc in the body is the main cause of mouth ulcers.
Psychological stress: Excessive tension and anxiety increase the risk of mouth ulcers.
Food allergies/sensitivities: Some people may be allergic to tomatoes, citrus fruits (lemon, orange, pineapple), chocolate, and spicy foods, which can cause mouth ulcers.
Digestive problems: People with digestive problems such as constipation and gas problems often experience mouth ulcers.
Hormonal changes: Women may experience mouth ulcers during menstruation or other hormonal changes.
Medications: The use of certain types of painkillers or other medications can cause mouth ulcers.
Weakened immune system: Mouth ulcers are more likely to occur when you have an illness or when your body’s immune system is weakened.
