See a neurologist for the trigeminal nerve. The trigeminal nerve is the nerve of the brain. There are 12 pairs of cerebral nerves including the optic nerve, olfactory nerve, motoneurotic nerve, talocrural nerve, abducens nerve, trigeminal nerve, facial nerve, auditory nerve, paracentral nerve, hypoglossal nerve, glossopharyngeal nerve, and vagus nerve. The trigeminal nerve includes the ophthalmic branch of the trigeminal nerve, the maxillary branch of the trigeminal nerve and the mandibular branch of the trigeminal nerve. Lesions of the trigeminal nerve manifest primarily as trigeminal neuralgia, with patients presenting mainly with recurrent episodes of paroxysmal, transient, severe pain without accompanying destruction of trigeminal nerve function. Patients are usually not accompanied by limb sensory disorders and motor disorders, which occur mostly after the age of 40 and are more common in women. Cranial CT examination is normal. Symptomatic treatment is mainly given with oral carbamazepine, phenytoin sodium and pregabalin, etc. In case of severe symptoms, radiofrequency thermocoagulation can also be performed.