The right side of the face numb tongue numbness, may be related to plant nerve function disorders, may also be due to intracranial infectious diseases, cerebrovascular disease and other causes. 1. Phytoneurological dysfunction: usually caused by prolonged overexertion, excessive late-night work, or prolonged mental trauma, etc., which can lead to neurological dysfunction, autonomic nervous system dysregulation, the right side of the face may be numb, numbness of the tongue may occur, may also be accompanied by panic, chest tightness, dizziness, headache and other manifestations. 2. Intracranial infectious diseases: due to the existence of intracranial infections, it is easy to lead to increased intracranial pressure, resulting in cerebral dysfunction, which may lead to the symptoms of numbness of the right side of the face, numbness of the tongue, which may also be accompanied by severe headache and projectile vomiting and other symptoms. Common diseases mainly include encephalitis, meningitis and so on. 3. Cerebrovascular disease: due to local hemorrhage or ischemia of brain tissue, resulting in cerebral nerve damage, induced brain dysfunction, it may cause the right side of the face numbness, numbness of the tongue, but also may be accompanied by dizziness, headache, speech disadvantage, and a series of neurological deficit symptoms. The numbness of the right side of the face and tongue may also be related to trigeminal nerve injury. If the symptoms continue to be unrelieved, or if there are other uncomfortable manifestations, you should seek medical treatment as soon as possible, and after clarifying the causative factors, be guided by the doctor for treatment.