1.Definition: Also known as facial muscle twitching, it is manifested as involuntary twitching of one side of the face. The twitching is paroxysmal and irregular, with varying degrees, and can be aggravated by fatigue, mental tension and voluntary movement. The onset of the twitching mostly starts from the orbicularis oculi muscle and then involves the whole face. The disease tends to occur after middle age and is commonly seen in women. It starts after middle age (only 0.9% of all patients with facial myasthenia gravis under 30 years of age) and is overwhelmingly unilateral, with a slight increase on the right side. There is no difference between men and women or slightly more women. The incidence of facial myospasm is 14.5 per 100,000 women and 7.4 per 100,000 men. Symptoms: The initial symptom of facial myospasm is eyelid jumping, which is also known as “left eye jumping for money, right eye jumping for disaster”, so it usually does not attract attention, but after a period of time it develops into facial myospasm, even to the corners of the mouth, and in serious cases, even the neck. The typical facial muscle spasm starts from the orbicularis oculi muscle and gradually develops downward to the whole half of the face. It is characterized by paroxysmal involuntary twitching of half of the facial muscles, which affects the patient’s appearance and causes great physical and mental pain to the patient. In severe cases, the eye fissure becomes smaller, the angle of the mouth is skewed to the diseased side, and tinnitus can be born when the stapedius muscle is affected. 3, clinical manifestations: clinical manifestations of primary facial myospasm most of the onset after middle age, more women. At the beginning of the disease, it is mostly paroxysmal involuntary twitching of the orbicularis oculi muscle on one side, gradually and slowly expanding to other facial muscles on one side of the face, the twitching of the corners of the mouth muscle is most easily noticed, and in severe cases, it can even involve the ipsilateral broad neck muscle, but the frontalis muscle is less involved. 4, convulsive seizure characteristics: paroxysmal, rapid, irregular twitching. The initial convulsion is light and lasts for only a few seconds, and then gradually lengthens for several minutes or longer, while the interval is gradually shortened and the convulsions are gradually aggravated. In severe cases, the convulsions are tonic, causing the ipsilateral eyes to be unable to open, the corners of the mouth to be skewed to the ipsilateral side, and the inability to speak, often exacerbated by fatigue, nervousness, and voluntary movements, but cannot imitate the control of the convulsions by themselves. Bilateral lateral muscle spasms are rarely seen. If there is, it often starts on both sides successively, and most of the convulsions stop on one side, and then the other side has another seizure, and the convulsions are light on one side and light on the other side, but the simultaneous onset and convulsions on both sides have not been reported. A few patients have mild facial pain during twitching, and individual cases may be accompanied by ipsilateral headache and tinnitus. How to treat facial muscle spasm? Facial myasthenia is usually treated with medication, botulinum toxin and microvascular decompression. Although traditional medication can relieve some of the symptoms of facial myospasm, the use of such medication may cause damage to liver and kidney function, and may also be accompanied by the risk of dizziness and drowsiness. The use of botulinum toxin injections to treat facial spasms also has shortcomings. Ninety percent of patients are effectively treated with botulinum toxin for the first time. In addition, botulinum toxin can cause facial muscle atrophy in the long term, so it has a certain impact on the patient’s facial appearance. But these two ways can not cure facial muscle spasm. If you want to cure facial muscle spasm, you can choose microvascular decompression surgery. Microvascular decompression surgery for facial muscle spasm Microvascular decompression surgery refers to the magnification of the intracranial nerve vessels through a high-powered microscope and reoperation, placing a spacer between the nerve and the vessel, thus releasing the compression of the vessel on the root of the facial nerve, restoring the normal function of the facial nerve and relieving the symptoms of facial muscle twitching. This technique has the advantages of minimally invasive, high safety and low recurrence rate, especially it can completely preserve the function of blood vessels and nerves, which has become the most effective method for treating facial muscle spasm in the world, and it is the only way to completely cure facial muscle spasm.