Mouth ulcer is a very serious disease. This disease can cause terrible mouth cancer. If you have a mouth ulcer, it is difficult to eat any food and you have to go through a lot of pain. The exact cause of this ulcer is not yet known. Even then, scientists have identified some of the causes that can cause these ulcers. For example: 1. Vitamin , iron deficiency. Such as vitamin B-6 , vitamin B-12 or any other vitamin. 2. May be due to hormonal reasons. Many times these ulcers occur before or after menstruation in girls. Even after menopause, these ulcers kill. 3. If the gums of the mouth are injured. If you brush your teeth loudly. 4. Smoking , drinking intoxicants, drinking alcohol also hurts the face. 5. Those who have AIDS , Diabetes, Cancer are. . If you don't sleep at night , worrying too much can cause sores on your face. . Ulcers inside the mouth are also due to heredity. . Even if there is an allergy in the face, there is a sore. 9. Colds can cause sores on the face. Ways to cure mouth ulcers: 1. Refrain from drinking outside. Avoid spicy foods. 2. Get at least 8 hours of sleep a night. 3. Taking vitamin supplements. 4. Use a soft toothbrush , with no pressure on the face. 5. This wound heals in about 7 days. If it is not good or there is pain, then paste and gel with carmellose sodium, benzocaine gels can be applied on the face as per the doctor's advice. . Sit at home and cool with salt or baking soda in hot water. Moreover, you can mix 1 pinch of baking soda and a little water and apply it on the wound. . Milk of Magnesia is much better if applied on the wound. It destroys the bacteria in the mouth.