James Douglas (1675–1742) and Nicolaus Anton Friedreich (1761–1836) also described it. Other viruses that have a link to Bellâs palsy include: Bellâs palsy most often happens in people between 15 and 60 years of age. [1] Symptoms can vary from mild to severe. Symptoms can vary from mild to severe. [14], Other conditions that can cause similar symptoms include herpes zoster, Lyme disease, sarcoidosis, stroke, and brain tumors. [3] Early treatment (within 3 days after the onset) is necessary for benefit[28] with a 14% greater probability of recovery. There’s no test that can tell you for sure if you have Bell’s palsy.
Bell's palsy can trigger an increased sensitivity to sound known as hy… [2][47] Bell's palsy affects about 40,000 people in the United States every year.
[1] It is named after Scottish surgeon Charles Bell (1774–1842), who first described the connection of the facial nerve to the condition. Facial weakness or paralysis may cause one corner of your mouth to droop, and you may have trouble retaining saliva on that side of your mouth. In fact, doctors usually find out through what they call a "diagnosis of exclusion." Bell palsy. Philadelphia, Pa.: Elsevier; 2017. https://www.clinicalkey.com. Researchers have long believed that viral infections may also play a role in the development of Bell's palsy. Bellâs Palsy: How Is It Diagnosed and Treated? This can tell them if the nerves are definitely damaged and if so, how much. Demyelination may not even be directly caused by the virus, but by an unknown immune response. Increased sensitivity to sound on the affected side 6. [44] Another study found that incomplete palsies disappear entirely, nearly always in the course of one month. [1] They may include muscle twitching, weakness, or total loss of the ability to move one, and in rare cases, both sides of the face. A blood test can also help rule out diabetes or an infection. This site complies with the HONcode standard for trustworthy health information: verify here.
[9], Once the facial paralysis sets in, many people may mistake it as a symptom of a stroke; however, there are a few subtle differences. The major differences in this condition are the presence of small blisters, or vesicles, on the external ear and hearing disturbances, but these findings may occasionally be lacking (zoster sine herpete). Bell’s Palsy is facial paralysis, resulting from a dysfunction of the 7th cranial nerve. A single copy of these materials may be reprinted for noncommercial personal use only. [22][23], In areas where Lyme disease is common, it accounts for about 25% of cases of facial palsy. See our safe care and visitor guidelines, plus trusted coronavirus information. How Long Does Coronavirus Live On Surfaces? Check out these best-sellers and special offers on books and newsletters from Mayo Clinic. Taking an antiviral medication like acyclovir and valacyclovir along with the steroids may help restore function, but there isnât definite proof of this. [40] As of 2007 the American Academy of Neurology did not recommend surgical decompression. You also have a greater chance of it if you have: Thereâs no lab test for Bellâs palsy. The cause of Bell’s palsy is unknown but is thought to be caused by inflammation affecting the body’s immune system. A decrease in your ability to taste 8. The nerve can be thought of as a bundle of smaller individual nerve connections that branch out to their proper destinations. One study found that 45% of patients are not referred to a specialist, which suggests that Bell's palsy is considered by physicians to be a straightforward diagnosis that is easy to manage. [35] To reduce pain, heat can be applied to the affected side of the face. After a follow-up of at least one year or until restoration, complete recovery had occurred in more than two-thirds (71%) of all patients. [30] Another review found a benefit when combined with corticosteroids but stated the evidence was not very good to support this conclusion. Corticosteroids such as prednisone can help ease swelling and make it more likely that your nerve function will get back to normal. [12], Although the facial nerve innervates the stapedius muscle of the middle ear (through the tympanic branch), sound sensitivity, causing normal sounds to be perceived as very loud, (hyperacusis), and dysacusis are possible but hardly ever clinically evident. Bell's palsy, also known as idiopathic facial palsy, is a form of temporary facial paralysis or weakness on one side of the face. Lyme Disease: Symptoms, Causes, Diagnosis, Treatment, Prevention, Treatments for Chronic Lyme Disease (PTLDS), Feel pain in your jaw or behind your ear on the side thatâs affected, Be more sensitive to sound on the side thatâs affected, A respiratory infection such as a cold or the flu. Viruses that have been linked to Bell's palsy include viruses that cause: The nerve that controls your facial muscles passes through a narrow corridor of bone on its way to your face. [8] It most commonly occurs in people between ages 15 and 60. Symptoms usually start to improve within a few weeks, with complete recovery in about six months. The condition may also make it difficult to close the eye on the affected side of your face. For instance, regrowth of nerves controlling muscles attached to the eye may sidetrack and also regrow connections reaching the muscles of the mouth. AskMayoExpert. [23] In the U.S., Lyme is most common in the New England and Mid-Atlantic states and parts of Wisconsin and Minnesota. This is also called the âfacial nerve.â Bellâs palsy can happen to anyone.
Mayo Clinic is a not-for-profit organization. [1] Many believe that this is due to a viral infection that results in swelling. The patients who regain movement within the first two weeks nearly always remit entirely. For the other 15%, recovery occurred 3–6 months later. Partial or complete blindness of the eye that won't close due to excessive dryness and scratching of the clear protective covering of the eye (cornea). It affects only one side of the face at a time, causing it to droop or become stiff on that side. One 2015 review found no effect regardless of severity. https://www.ninds.nih.gov/Disorders/Patient-Caregiver-Education/Fact-Sheets/Bells-Palsy-Fact-Sheet. In this way, movement of one also affects the other. Another complication can occur in case of incomplete or erroneous regeneration of the damaged facial nerve.
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