Common diseases of tongue numbness may include: burning mouth syndrome, cerebrovascular disease, cervical spondylosis, tumors and other diseases. 1. Burning mouth syndrome: burning tongue pain is the most common clinical symptom, but it can also be manifested as numbness, tingling sensation, dull taste, dull pain discomfort and other sensory abnormalities. 2. Cerebrovascular diseases: (1) Cerebral hemorrhage: mostly seen as a complication in patients with hypertension, local hematoma compression will lead to brain tissue damage, and then the corresponding dysfunction, manifested as numbness of the tongue and other symptoms. (2) Cerebral infarction: due to cerebral vascular embolism, hemodynamic changes, cerebral atherosclerosis and other cerebral vascular occlusion, resulting in local cerebral ischemia damage, resulting in neurological impairment, which can also be manifested as numbness of the tongue. 3. Cervical spondylosis: tongue numbness is mostly seen in sympathetic cervical spondylosis. Most of them are related to long-term low head, work at work, with symptoms of sympathetic inhibition or excitation. Patients may feel neck pain, headache, dizziness; face, tongue or trunk numbness. 4. Tumor: Local tumors may cause numbness of tongue by compressing and invading related brain nerves, such as hypoglossal nerve, glossopharyngeal nerve and lingual nerve in trigeminal nerve. Numbness of tongue may also be caused by other reasons, if there is no relief for a long time, you should go to the regular hospital as soon as possible to avoid delaying the condition.