The mouth ulcers we suffer from in daily life are usually benign and can be cured by taking some vitamin C and B2, but some people suffer from mouth ulcers that can turn malignant, so people must be concerned about mouth ulcer disease. The probability of having a mouth ulcer in a person’s lifetime is almost 100%. Mouth ulcers have a real possibility of becoming cancerous. Therefore, the identification of benign and malignant ulcers is really a matter of concern for everyone. In terms of whether a mouth ulcer can become malignant, benign mouth ulcers are those that do not become cancerous, while malignant mouth ulcers are the opposite. So how to distinguish benign mouth ulcers from malignant mouth ulcers? The characteristics of benign and malignant mouth ulcers are distinguished firstly by the healing time of ulcers. Benign mouth ulcers can generally heal in a few days to a few weeks, while malignant mouth ulcers are progressive in development and do not heal for months or even years. Secondly, the morphology can be distinguished. Benign mouth ulcers are generally regular in shape, round, oval or linear, with neat and clear edges, clear demarcation of surrounding tissues, smooth base of depression, soft to the touch, and obvious pain. Malignant oral ulcers are irregular in shape, the boundary is unclear, the edge is raised in an uneven shape, the bottom of the ulcer is not flat, granular, hard and tough to touch, obviously different from the normal mucosa, the ulcer pain is not very obvious. The third can be distinguished from the regular course of the disease. Benign mouth ulcers often recur and are self-limiting, while malignant mouth ulcers have no history of recurrence and are slow to heal once they develop. The fourth can be judged according to the patient’s general condition: patients with benign mouth ulcers have fewer general symptoms, and the lymph nodes in the neck are not enlarged, or they are enlarged but not hard and not adherent. Patients with malignant mouth ulcers, on the contrary, may show fever, swollen lymph nodes in the neck, loss of appetite, emaciation, anemia, weakness and other manifestations. Finally, judgment can be made based on the sensitivity to drugs. Benign mouth ulcers are generally effective after using anti-inflammatory and antiseptic drugs, and healing is accelerated, while malignant mouth ulcers are often “ignored” by drugs, and the effect is not obvious. Practical identification methods: see, touch, look 1, see the morphological characteristics of the ulcer, if the ulcer is superficial, smooth surface, the edge is not higher than the mucosa, bright red color, round or oval, this ulcer is benign possibility. On the contrary, be alert to the possibility of malignancy. 2. Touch The texture of the ulcer is painful. Feel the ulcer and its surrounding area with your fingers and compare the difference in hardness between the two, especially if there are hard nodules at the bottom of the ulcer. The harder the ulcer, the greater the possibility of malignant lesions. 3.Mind the lymph nodes, carefully feel the lymph nodes behind the ear, the angle of the jaw and the chin. Under normal circumstances, the lymph nodes in these areas cannot be felt, but in case of inflammation or tumor, swollen lymph nodes as large as soybeans or broad beans can be felt. Enlarged lymph nodes caused by benign ulcers have a smooth surface and a large mobility of the lymph nodes. If swollen lymph nodes with lumpy surface and not easily movable are found, this condition often indicates the possibility of malignant lesions. Warm tip: If you are not sure whether you are suffering from malignant mouth ulcers or benign mouth ulcers, it is best to go to the hospital stomatology department for an examination to avoid the possibility of malignant lesions of mouth ulcers.