Symptom 2: If the oral cavity turns white, brown or black, it means that the mucosal epidermal cells have changed. In particular, the oral mucosa becomes rough, thick or induration, and white spots and erythema appear in the oral mucosa, which is likely to have become cancerous.
Symptom 3: The course of oral ulcer is generally less than two weeks. If the symptoms such as burning sensation and pain are still not good for more than two weeks, you should be alert to the possibility of oral cancer. Oral cancer often takes the form of ulcer, with raised edges, uneven center and covered with necrotic tissue, and obvious pain.
Symptom 4: The symptoms of oral cancer in different parts are similar, mainly as follows: there will be pain. In the early stage, there is generally no pain or only local allodynia. If there is ulceration, there will be obvious pain. When the tumor further invades the nearby nerves, it can cause ear and throat pain.
Symptom 5: Among oral cancers, tongue cancer and gingival cancer complained of pain in the early stage. If the pain site does not match the site of oral mass ulcer, it is necessary to consider the possibility of tumor spreading to other sites.
Symptom 6: Oral squamous cell carcinoma often has ulcers, which are characterized by hard mass, irregular edge uplift and uneven base, and the ulcer surface spreads to all tumor areas. In fact, in terms of oral cavity, if you feel unwell at ordinary times, you should see a doctor in time.