1.Secondary trigeminal neuralgia The pain is persistent with hyperalgesia and dull corneal reflexes, often combined with other symptoms of brain nerve damage. It is common in multiple sclerosis, medullary cavitation, primary or metastatic skull base tumor, etc. Toothache is often persistent, limited to the gum area, and can be aggravated by eating cold or hot food, and X-ray examination can help to identify caries and tumor. 3.Tongue-pharyngeal neuralgia is less common and is commonly seen in young women. It is a paroxysmal pain confined to tonsils, tongue root, deep part of pharynx and ear canal, i.e. the distribution area of the glossopharyngeal nerve, similar in nature to trigeminal neuralgia. It is often triggered by swallowing, speaking, yawning, and coughing. Spraying with 4% cocaine or 1% bupivacaine at trigger points such as the pharynx and tonsillar fossa of the tongue can stop the attack.