The NINDS is a component of the National Institutes of Health (NIH), the leading supporter of biomedical research in the world. Knowledge gained from this research may help scientists find the definitive cause of Bell's palsy, leading to the discovery of new effective treatments for the disorder.For more information on neurological disorders or research programs funded by the National Institute of Neurological Disorders and Stroke, contact the Institute's Brain Resources and Information Network (BRAIN) at:Information also is available from the following organizations:"Bell's Palsy Fact Sheet", NINDS, Publication date June 2018.NINDS health-related material is provided for information purposes only and does not necessarily represent endorsement by or an official position of the National Institute of Neurological Disorders and Stroke or any other Federal agency. palsy, and (c) no recommendation can be made regarding the effect of physical therapy in patients with Bell’s palsy. Additional projects seek to identify the mechanisms and consequences of neuroinflammation on peripheral nerve function.
Because of possible drug interactions, individuals taking prescription medicines should always talk to their doctors before taking any over-the-counter drugs.Another important factor in treatment is eye protection. Bell’s palsy can have consequences from a previous injury or condition, such as involuntary mouth movements when trying to blink the eyes or incomplete recovery of facial muscle weakness resulting in trouble speaking or forming words (dysarthria).The mission of the National Institute of Neurological Disorders and Stroke (NINDS) is to seek fundamental knowledge about the brain and nervous system and to use the knowledge to reduce the burden of neurological disease.
Many issues must be addressed in treating patients with Bell palsy. Other symptoms may include drooping of the mouth, drooling, inability to close eye (causing dryness of the eye), and excessive tearing in one eye.
The facial nerve also transmits taste sensations from the tongue.Bell's palsy is the most common cause of facial paralysis, although its exact cause is unknown. Advice on the treatment or care of an individual patient should be obtained through consultation with a physician who has examined that patient or is familiar with that patient's medical history.All NINDS-prepared information is in the public domain and may be freely copied.
Bell’s palsy can also interfere with the sense of taste. As the facial nerve swells and becomes inflamed in reaction to the infection, it causes pressure within the Fallopian canal (a bony canal through which the nerve travels to the side of the face), leading to the restriction of blood and oxygen to the nerve cells. Bell's palsy is more common in patients with diabetes, and although it can affe… Bell's palsy can interrupt the eyelid's natural blinking ability, leaving the eye exposed to irritation and drying. It's believed to be the result of swelling and inflammation of the nerve that controls the muscles on one side of your face.
A test called electromyography (EMG, which uses very thin wire electrodes that are inserted into a muscle to assess changes in electrical activity that occur during movement and when the muscle is at rest) can confirm the presence of nerve damage and determine the severity and the extent of nerve involvement.
The exact cause is unknown. 238 0 obj <> endobj Some individuals with co-existing conditions may not respond well to or be able to take steroid drugs. Impaired immunity from stress, sleep deprivation, physical trauma, minor illness or autoimmune syndromes are suggested as the most likely triggers. Symptoms appear suddenly over a 48 - 72-hour period and generally start to improve with or without treatment after a few weeks, with recovery of some or all facial function within six months. Keeping the eye moist and protecting it from debris and injury, especially at night, is important. Antiviral agents (in addition to steroids) might increase the probability of recovery of facial function, although their benefit has not been clearly established. The NINDS conducts and supports an extensive research program of basic science to increase understanding of how the nervous system works and what causes the system to sometimes go wrong, leading to dysfunction.
Because persons with true Bell palsy generally have an excellent prognosis, and because spontaneous recovery is fairly common, treatment of Bell palsy is still controversial.
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