Sometimes all of a sudden, they feel pain in half of their face, and sometimes they have toothache for several days in a row. Many patients do not think that it may be due to cold, muscle stiffness and other reasons, and they may get better after resting. However, the truth is very scary, many people go to the hospital for examination only to find that they have trigeminal neuralgia. Without a little warning, without a little defense, trigeminal neuralgia has found itself. What pain symptoms are caused by trigeminal neuralgia? Next, let Professor Yu Yanbing, an expert from Civil Aviation General Hospital, take you through the main symptoms of trigeminal neuralgia. Symptom 1: One side of the facial muscles is often accompanied by a short but intense pain, which comes suddenly and goes slowly. The frequency is also fast. Each time the pain is similar in sensation, it lasts about 1-2 minutes. Symptom 2: Mostly in the lips, nose, eyebrows and inside the mouth, etc., the pain is immediate when touched. Even if it is an ordinary act of eating or talking, as soon as the tongue touches the painful spot, it is uncontrollable. Symptom 3: Tears stay involuntarily during the onset of pain, and sometimes drooling. Severe cases are also accompanied by facial twitching. Some skin will be red and hot, while others will be cold and itchy when the pain is present. Symptom 4: The pain is periodic, with a short painless period (a few days to a few years), confined to one or more branches of the trigeminal nerve distribution area on one side, with the right side and the two or three branch areas being more common, and pain on both sides being rare. Finally, we remind you that trigeminal neuralgia is not a trivial disease, so if you find similar symptoms, go to a neurosurgical hospital for examination and consultation as early as possible. Try to choose a large, regular and reputable hospital to avoid delaying the best treatment period.