Facial muscle spasm is caused by the compression of nerves by blood vessels. When the facial nerve forms a mutual perpendicular crossover with microvessels in its stroke, the facial nerve is compressed and the myelin sheath is damaged, the nerves are exposed and come into contact with each other, and the nerve impulses are short-circuited, causing facial muscle spasm. The clinical manifestations of the disease: ① Paroxysmal involuntary twitching of one side of the facial muscles, mostly starting from the orbicularis oculi muscle, and later gradually spreading to the facial expression muscles including the broad cervical muscles on one side, while the frontal muscles are usually not involved. The disease progresses slowly: the twitching is light at the beginning, relieved in a short time, with a long interval, and then the seizures become more frequent, and even tonic spasms of the facial muscles, incomplete closure of the lid and “strange appearance” of the corners of the mouth raised upward may appear. (3) Facial muscle spasm is a sudden irregular twitching that cannot be controlled by the patient and is caused or aggravated by exertion. One twitch is from a few seconds to a few minutes or longer, and the interval is gradually shortened as the symptoms increase. In severe cases, the convulsions are tonic until the affected eye cannot be opened, and the patient is often distracted during the convulsions, which affects work and study. Most of the convulsions stop after sleep. ④ The face is usually painless during the convulsions, and there is no neck or limb twitching. ⑤ Individuals may have headache and ipsilateral tinnitus, auditory hypersensitivity, and vasodilatory dysfunction of the affected side, but no vision loss. Solution: Microvascular decompression Microvascular decompression is treated by relieving the compression of nerve roots by blood vessels, and is the only treatment method currently available that targets the cause of the disease. This procedure is performed under a high-powered surgical microscope. Advantages of microvascular decompression for facial spasm: A. 3.0T nuclear magnetic imaging technology, precise lesion B. High-powered microscope stereotactic C. Purely minimally invasive technology, small incision, protection of normal nerve function D. Fast postoperative recovery, low recurrence rate E. Resume normal life, no longer dependent on any drugs