Jaw pain may be caused by the following reasons: 1, there may be trauma here. For example, in the fight, here by the direct violence of the blow or in the car accident, this compound injury, here by the impact will cause this out of the serious soft tissue contusion, bone contusion or even fracture injury, and then lead to jaw pain. 2, this situation may be due to long-term pressure caused by. For example, there are many patients who are used to sleeping on the table for a long time. This may be caused by the long-term squeezing of the jaw, resulting in sterile inflammation and pain. 3, this condition may be caused by lesions related to the temporomandibular joint. For example, if the patient often does some excessive mouth opening movements or uses one side of the teeth for a long time to chew very hard food, it may cause subluxation of the TMJ or inflammation here, which may lead to pain in the whole jaw. 4. This condition may be caused by tooth-related lesions. For example, patients with periodontitis, wisdom teeth, or gum infections may experience pain in the jaw. Finally, pain in this area may also be caused by facial neuropathy, as well as local infection or enlarged lymph nodes.