Facial muscle spasm is a common facial nerve disorder in life. Many people know that facial spasm is an involuntary twitching of the face, which can have a great impact on a person’s normal life and work, making it unbearable. So, what are the causes of facial spasm? The pathogenesis of facial muscle spasm is mainly the following three: 1, vascular factors Clinical data show that more than 90% of facial muscle spasm, are due to the facial auditory nerve by the tortuous intracranial vascular pulsatile compression. In the middle-aged group after 40 years old, due to vascular sclerosis, the chances of vascular deformation and displacement increase, thus the patients with facial myospasm are mostly middle-aged and elderly women. 2, non-vascular factors Due to the facial auditory nerve area has a tumor, occupying the compression of the facial nerve, this case timely surgery, removal of the tumor can be. Or improper surgery, causing short circuit of brain and facial nerve, when other nerves transmit signals, the facial nerve follows the excitement together. With the progress of clinical surgery technology, this kind of facial muscle spasm is extremely rare. 3, other factors Most doctors believe that facial neuritis may lead to nerve demyelination, or facial neuritis involves the nerve nuclei within the brainstem, forming an epilepsy-like foci and producing episodic twitching of the facial muscles. What is the treatment for facial muscle spasm? Microvascular decompression, which is the most effective means of treating facial muscle spasm at present. The technique is performed through precise positioning under a microscope, and under the knife of an experienced surgeon, the diseased vessels and nerves are separated quickly and safely, thus achieving a cure.