Is facial neuritis the same as facial paralysis?

Written by Tang Bo

Neurology

Updated on August 31, 2024

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Facial neuritis can lead to facial paralysis, but facial paralysis can be divided into central facial paralysis and peripheral facial paralysis. Generally, facial paralysis caused by facial neuritis is peripheral facial paralysis. This means that there might be incomplete closure of the eyelids and deviation of the mouth corners. If central facial paralysis is considered, it generally does not lead to incomplete closure of the eyelids. Central facial paralysis is mainly caused by cerebrovascular diseases or other diseases of the brain or brainstem, whereas facial neuritis is due to damage to the facial nerve.

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Written by Tang Bo

Neurology

42sec

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What should be paid attention to in daily life with facial neuritis?

If facial neuritis occurs, one should pay attention to eye care. Due to facial neuritis, eyelid closure may be incomplete, potentially allowing foreign objects or infections to enter the eye. Therefore, it is advisable to reduce outdoor activities, keep the eyes clean, and during social interactions, cover the affected eye with an eye patch or apply ophthalmic ointment to prevent conjunctival or corneal infections, while minimizing eye use. Regarding diet, some patients may experience disturbances in taste, so it is important to be mindful of the temperature of food, avoid hard food, and maintain oral hygiene.

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Written by Su Mei

Neurology

59sec

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Can facial neuritis be cured?

Patients with incomplete facial paralysis may recover or heal within one to two months, while those with complete facial paralysis generally need two to eight months, or even a year to recover, often leaving sequelae. Recovery of taste within a week indicates a good prognosis. Young patients have a better prognosis, while elderly patients with mastoid pain, diabetes, hypertension, cerebral arteriosclerosis, myocardial infarction, and other conditions have a poorer prognosis. We generally use electromyography (EMG) to examine and predict outcomes. If a patient with complete facial paralysis shows an M-wave amplitude in the affected area's EMG action potentials that is 30% or more of the normal value within seven days of the illness, they may fully recover within two months. If optic nerve potentials appear within ten days after the onset of the illness, the recovery tends to be slow.

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Written by Yuan Jun Li

Neurology

57sec

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Does facial neuritis cause fever?

Bell's palsy can cause fever, usually a low-grade fever. When the body temperature is between 37°C and 38°C, it is generally referred to as low-grade fever. The primary cause of Bell's palsy is viral infection. Patients may also exhibit symptoms such as eye fissures, paralysis of the facial expression muscles of the upper and lower face, disappearance of forehead creases, enlargement of the eye fissures, incomplete eyelid closure, showing white sclera when the eyes are closed, shallowing of the nasolabial folds, deviation of the mouth corners, air leakage when whistling, air escaping when puffing cheeks, loss or reduction of taste in the anterior two-thirds of the tongue, and difficulty in retaining food on the affected side when eating. Patients are prone to developing oral inflammation and conjunctivitis. Early and proper treatment after the onset is crucial, and most patients can achieve clinical cure after treatment.

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Written by Zhang Hui

Neurology

1min 5sec

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Causes of facial neuritis

The etiology of facial neuritis is not very clear, but some views suggest that viral infections can cause edema of the facial nerve, leading to compression of the nerve and resulting in inflammation. Additionally, some nonspecific inflammatory responses can also lead to edema of the facial nerve, presenting some clinical manifestations of facial paralysis. Other high-risk factors for facial neuritis include diabetes, autonomic instability, rheumatoid immune diseases, lymphoma, etc. Therefore, it is evident that the mechanisms of facial neuritis onset are unclear, with potential causes including viral infections, diabetes, central nervous system lymphoma, or autonomic instability, all of which can lead to facial neuritis. The primary symptom of facial neuritis is paralysis of the facial muscles. With standard treatment, complete recovery generally occurs within one to two months. Facial neuritis caused by tumors tends to recur and requires heightened vigilance.

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Written by Zhang Hui

Neurology

51sec

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Clinical manifestations of facial neuritis

**Point One**: Patients with facial neuritis may exhibit clinical manifestations such as crooked mouth corners and shallower nasolabial folds. They may also experience water leakage while drinking, disappearance of forehead wrinkles, weakness in closing the eyes, and some patients may even sleep with their eyes open. **Point Two**: Patients might also experience taste disturbances, particularly noticeable in the anterior two-thirds of the tongue, and may also have secretion disorders of the salivary and lacrimal glands. **Point Three**: Some patients may experience hypersensitivity to sound, characterized by herpes on the tympanic membrane of the external auditory canal. Facial neuritis is a nonspecific inflammatory response, and treatment with corticosteroids can be effective.