Jaw and neck numbness and distension may be due to cervical spondylosis, trauma, cerebral ischemia and so on. 1. Cervical spondylosis: degenerative changes, cervical vertebrae hypertrophy and hyperplasia, and cervical injuries cause cervical vertebrae osteomalacia and other diseases, which can compress the nerves in severe cases, leading to numbness and swelling of the jaw and neck. 2. Trauma: When there is trauma to the jaw or neck, if the nerve is injured, the patient may experience local numbness. At the same time, due to the edema of the wound, the patient may feel a sense of swelling. 3. Cerebral ischemia: when the cerebral blood vessels or carotid artery stenosis plaque and obstruction, the patient’s brain blood supply may be insufficient, and at this time, the patient may feel numbness and swelling in the jaw and neck. It is recommended that patients seek medical advice in a timely manner, under the guidance of the doctor to identify the causes of numbness and swelling of the jaw and neck, and targeted treatment.