The diagnosis of trigeminal neuralgia is mainly based on the patient's clinical symptoms. It is mostly characterized by transient pain around the bilateral nasal root and corners of the mouth. There are generally no obvious prodromal symptoms before an attack; the pain occurs suddenly and stops suddenly. The nature of the pain is quite sharp, resembling knife-like cuts or a burning stabbing sensation. There are generally no significant signs before an onset, and the duration of an attack varies, lasting from a few seconds to several seconds, and even up to one or two minutes. Most patients experience sudden attacks and sudden cessation. Additionally, recurrent attacks can lead to severe adverse symptoms in patients and may even cause psychosomatic illnesses.