There are three branches of the trigeminal nerve, including the ophthalmic, maxillary and mandibular branches. The ophthalmic branch is mainly the area above the eyelid and the forehead, and is the area innervated by the ophthalmic branch of the trigeminal nerve. The maxillary branch is mainly the area below the eyelids and above the mouth and lips, and is the area innervated by the maxillary branch. The mandibular branch refers to the area below the mouth and lips and the lower jaw, and is the area innervated by the mandibular branch of the trigeminal nerve. The trigeminal nerve is bilaterally innervated and does not extend beyond the midline. Trigeminal neuralgia is mostly seen in the maxillary branch and the mandibular branch, and it is within the midline. For trigeminal neuralgia, pain medications such as carbamazepine and phenytoin sodium can be given orally, and if medication is not effective, surgery can be considered if necessary. Patients are also advised to take regular rest to avoid triggers that cause trigeminal neuralgia attacks.