What Are the Most Common Causes of Facial Numbness?

Also known as "facial facial muscle weakness" and "facial paralysis" It is a clear sign of facial paralysis. The facial expression muscles of the patients cannot be moved autonomously, raised eyebrows and no wrinkles on the forehead, closed eyes, closed eyelids, closed mouth and drooped the corner of the affected side, leaked air from the mouth and cheek, and disappeared the nasal and sulcus of the affected side when showing teeth. When it is tilted to the healthy side, the affected side muscles relax when touched, which is facial paralysis.

Also known as "facial facial muscle weakness" and "facial paralysis." It is a clear sign of facial paralysis. The facial expression muscles of the patients cannot be moved autonomously, raised eyebrows and no wrinkles on the forehead, closed eyes, closed eyelids, closed mouth and drooped the corner of the affected side, leaked air from the mouth and cheek, and disappeared the nasal and sulcus of the affected side when showing teeth. When it is tilted to the healthy side, the affected side muscles relax when touched, which is facial paralysis.

Chinese name

Facial nerve palsy

Foreign name

prosopoplegia

Causes and common diseases of facial nerve palsy

The cause is unknown. Most scholars in academia believe that it is caused by local trophic nerve blood vessels, spasms caused by wind chills, and caused by facial ischemia and edema. It may also be related to local infection. Such as rheumatic facial neuritis, latent non-purulent otitis media, and filtered viral infections. Because the facial nerve passes through the narrow and tortuous bone canal out of the cranial foramen, regardless of local nerve tissue edema caused by bleeding or inflammation, it may compress the nerve and cause dysfunction.

It is clinically divided into central facial paralysis and peripheral facial paralysis: The central facial neuropathy is above the facial nerve nucleus. Therefore, when the upper segment of the lateral nerve is damaged, the facial muscle movement in the upper part of the face is not affected, and only the facial expression muscle in the lower part is paralyzed. Common diseases include brain tumors, brain abscesses, cerebral hemorrhage, encephalitis, polio, multiple cerebral spinal sclerosis, craniocerebral trauma, and intracranial aneurysms. Peripheral facial nerve palsy lesions are below the facial nucleus and below the nucleus, showing facial facial paralysis (including the upper part of the face and the lower part of the face). Common diseases include intracranial disorders: cerebellar pontine horn tumors, skull base meningitis, brain stem encephalitis, and skull base bleeding. Intratemporal bone disorders: Bell's palsy, varicella-zoster virus infection, otogenic infection, trauma or tumor in the middle ear and inner ear, congenital facial hypoplasia, etc. Facial disorders: purulent mumps, etc .; facial neuritis caused by various infectious diseases or poisoning: diphtheria, syphilis, lead poisoning, etc.

Differential diagnosis of facial nerve palsy

How to judge: First, rely on the patient's morbidity, accompanying symptoms, duration of disease, medical history, etc .; on the other hand, rely on electrodiagnosis. Compared with electromyography, direct induction electrodiagnosis has the following advantages: convenient and practical , Economic; can be diagnosed and treated at the same time; convenient for repeated inspections.

Facial nerve palsy examination

According to the tension and active movement of the facial muscles, the disease is divided into the following three levels: If the patient's bilateral palpebral fissure and mouth angle droop is 2mm, the nasolabial sulcus becomes shallow, there is no ectropion and incomplete closure, and it is weak. Wrinkle forehead force, the full width of the canine and the second upper incisor can be seen in the teeth, and it is difficult to whistle, it is mild facial paralysis; if the patient's bilateral eyelid fissure and mouth angle droop above 3mm, the lower eyelid is valgus, and the nasolabial fold For hours, there are no wrinkles in the forehead, no eyelids can be closed, only one canine can be exposed, and no whistle can be exposed. It is severe facial paralysis; if the patient's condition is between the two conditions, it is medium facial paralysis.

Facial nerve palsy treatment principles

Generally, 85 ~ 90% of patients can recover after acupuncture, medicine and physical therapy. Facial nerve decompression and plastic surgery can be performed for those who have not recovered or have relapsed after conservative treatment, and those who damage the facial nerve tube or compress the nerves due to other factors.