Temporomandibular joint disorder is very common. Yawning or biting hard objects can also cause joint disorders, and eating hard objects for a long period of time can easily cause wear and tear on the jaw joint, which can also lead to more serious joint problems. Common TMJ disorder symptoms: 1. Localized pain: The pain is usually concentrated around the joint on the deep side of the ear screen, and the pain is especially severe when eating or opening the mouth. There may be pressure pain in the occlusal region of the mandibular body, the temporal muscle region of the temporal region, the inner pterygoid region of the inner ascending branch of the mouth, and the outer pterygoid region of the posterior superior aspect of the maxillary tuberosity. 2.Joint popping: Generally the popping sound appears when the jaw is moving, and the opening and closing of the mouth is palpable or audible popping sound. Or in the opening and closing of the mouth there is a rubbing sound of the joint, which represents the joint problem has reached a very serious abnormality of the bone structure. 3, abnormal jaw movement: mainly manifested in difficulty in opening the mouth, opening the mouth with a skewed jaw or opening the mouth too wide, depending on the type of disease performance varies. 4. Dizziness and tinnitus: If the situation is more serious there may be dizziness and tinnitus, etc. There will be a buzzing sound when the tinnitus is present, and the dizziness cannot be relieved after rest. Once one or more of the above manifestations appear, you need to consult a doctor in time to confirm the diagnosis of TMJ disorder, which requires symptomatic treatment, and generally refer to x-ray examination or arthrography when confirming the diagnosis.