Trigeminal neuralgia is a very common type of moderate pain, and patients with trigeminal neuralgia are often afraid to wipe their face, eat, or even swallow saliva, thus affecting their normal life and work. Some people call this pain “the first pain in the world”. When trigeminal neuralgia occurs, it is often necessary to do a detailed examination, the examination items are: Trigeminal neuralgia can be divided into primary (symptomatic) trigeminal neuralgia and secondary trigeminal neuralgia two categories, of which primary trigeminal neuralgia is more common. Laboratory tests 1, blood routine, blood electrolytes Generally no specific changes, the onset of blood can be slightly high. 2, blood sugar, immune program, cerebrospinal fluid examination, if abnormal, there is a significance of differential diagnosis. Imaging examination Angiography, CT and MRI: some patients can find malformed blood vessels at the base of the skull. If the following tests are abnormal, they have the significance of differential diagnosis. 1.Electroencephalography and funduscopic examination. 2, Cranial base radiography. 3.Chest X-ray, electrocardiogram. Fork neuralgia attacks, pain as intense as cuts, electric shock, lasting several seconds to 1-2 minutes, often accompanied by facial muscle twitching, tears, salivation, facial flushing, conjunctival congestion and other symptoms, with the aggravation of the condition, the intervals become shorter and shorter, more and more frequent episodes, after a strong pain stimulation, so that the patient’s mental nervousness is abnormal, unforgettable, resulting in a great deal of pain.