There are many diseases that cause head and facial pain, and you need to distinguish the kind of disease in order to treat it properly. Among the many diseases, the easiest one to get wrong is toothache. Since tooth sensation is what the trigeminal nerve is responsible for and the pain site is the same, many patients with trigeminal neuralgia have experienced tooth extraction. Glossopharyngeal neuralgia and trigeminal neuralgia overlap in terms of pain sites and require specialized methods to identify them. There are also trigeminal neuralgia caused by intracranial tumors, multiple sclerosis, arachnoiditis, etc. Migraines are also often confused, so it is often necessary to go to a large hospital to see an experienced specialist.