First, the ulcer does not heal for a long time
Oral ulcer is a common disease. If you get oral ulcer, it will disappear in 2 weeks. If it still doesn't get better after 2 weeks, patients should pay attention to it. Ulcer is a common form of oral cancer. The center of the ulcer is uneven, and the surrounding edges are raised. The broken tissue may cover the ulcer, and the pain is unbearable. If oral mucosa erythema, granular granulation and edema appear in the mouth, it means that the surface cells of oral mucosa have changed, because oral mucosa is pink. Especially the appearance of leukoplakia, it should be noted that leukoplakia is considered as an early sign of oral cancer.
Second, oral bleeding
There is sudden bleeding in the mouth, and no reason can be found. Just pay attention to it. Medically, bleeding is a big danger signal of oral cancer. The tumor that rises in the mouth is very fragile, and it will bleed if it is accidentally touched. Once oral cancer occurs, it will metastasize like the surrounding cervical lymph nodes. If we are a little careless, cancer cells will appear in the cervical lymph nodes. Once the cervical lymph nodes are found to be swollen, we need to check the oral cavity in time. Cancer cells invade the muscles and mandibular joints at the mouth opening and closing, which limits the movement of the mouth opening and closing.
Third, the teeth are uncomfortable.
Patients who suddenly have loose teeth, bad occlusion when chewing food, discomfort when wearing dentures, and pain or numbness in the mouth or throat that does not improve after treatment should be alert to oral cancer. In addition, patients should also pay attention to unexplained nosebleeds, facial nerve numbness and other symptoms. If the oral mucosa becomes discolored, it means that the surface cells of the mucosa change, the oral mucosa becomes rough or hard, and cancer may occur when erythema or white spots appear.