The same facial muscle spasm, why some people only jump the muscles at the corners of the eyes and mouth, and some people even jump the neck? It is because the range of facial jumping is related to the branch of facial nerve compression and also the degree of facial nerve compression. Let’s start with why different parts of the facial nerve are under pressure, resulting in a different range of throbbing on the face, right? The facial nerve starts from the brain and extends all the way to the face, where it is divided into five branches, each in charge of a different part of the face. (1) Temporal branch: innervates the frontalis muscle and orbicularis oculi muscle, this branch is generally less likely to be invaded by the surrounding blood vessels; (2) Zygomatic branch: innervates the orbicularis oculi muscle and zygomaticis muscle, when this branch is invaded by the surrounding blood vessels, the eyelids will easily jump; (3) Buccal branch: innervates the buccal muscle, orbicularis oculi muscle and other perioral muscles, when this branch is invaded by the surrounding blood vessels, the cheek and corner of the mouth muscles will not work well; (4) Mandibular rim branch: distributed in the lower lip muscles, such as the descending lip muscles When this branch is violated by the surrounding blood vessels, some expressions will be difficult to make; (5) Cervical branch: innervates the broad neck muscle, when the nerve of the cervical branch is compressed, the neck will twitch and the facial muscle spasm will be more serious. The more facial nerve branches are involved, the greater the range of twitching, and the more severe the condition. 94% of facial muscle spasms start with eyelid fluttering, and when the condition progresses to moderate, the twitching spreads to the corners of the mouth, and in severe cases, even the neck will twitch. Secondly, if the nerve is damaged by long-term peripheral vascular invasion, the extent of the throbbing will also become larger. When the facial spasm is not treated in time, that is, when the blood vessel in question is not removed from the facial nerve, the two “tubes” will rub together over time. The nerve is like a wire, wrapped in a layer of insulation, and the wire in the middle conducts electrical signals, so if the insulation is worn by the blood vessel in question, it can easily leak. For example, if the patient just wants to laugh, but the corners of the mouth, eyes and even the neck twitch, this is a more serious facial muscle spasm – not only the extent of the twitching is very large, but also the degree of aggravation. At this point, the facial nerve is not just compressed, but damaged, making it more difficult to treat. Of course, patients do not have to worry too much, as the facial nerve is not easily damaged permanently, and in most cases, especially in patients who have had the disease for less than 8 years, the normal function of the facial nerve can be restored with reasonable treatment.