Etiology of trigeminal neuralgia and facial spasm: Most trigeminal neuralgia and facial spasm are due to demyelination of the trigeminal nerve or facial nerve roots by the compression of the responsible blood vessels, resulting in short-circuiting of impulses between the afferent and efferent nerve fibers. Clinical manifestations of trigeminal neuralgia: trigeminal neuralgia is a disease characterized by recurrent, transient paroxysmal severe pain in the distribution area of the trigeminal nerve in the face. Pain is the most prominent manifestation of the disease; 2. Pain is limited to the trigeminal nerve distribution area, mostly unilateral, often located in the upper lip, nose, corners of the mouth, incisors and buccal mucosa; 3. The painful area often has a trigger point, and the painful attack is triggered by mechanical factors such as washing the face, brushing teeth, talking, eating, etc.; 5, physical examination and cranial CT or MRI examination are not abnormal; clinical manifestations of facial muscle spasm: facial muscle spasm, also known as facial muscle twitching, refers to the involuntary twitching of one side of the facial muscles; 1, mostly seen in middle-aged onset, starting with involuntary twitching of one side of the eye box muscle, and then gradually The spasms are intermittent at the beginning, but gradually become more frequent, and the symptoms can be aggravated by emotional stress and fatigue.