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Bell's palsy is a type of facial paralysis that results in a temporary inability to control the facial muscles on the affected side of the face. [1] In most cases, the weakness is temporary and significantly improves over weeks. [4] Symptoms can vary from mild to severe. [1]
Bell's palsy is the most common cause of acute facial nerve paralysis. [3] [4] There is no known cause of Bell's palsy, [5] [6] although it has been associated with herpes simplex infection. Bell's palsy may develop over several days, and may last several months, in the majority of cases recovering spontaneously.
Bell's palsy can result from inflammation of the facial nerve where it leaves the skull at the stylomastoid foramen. Patients with Bell's palsy appear with facial drooping on the affected side. Patients with Bell's palsy appear with facial drooping on the affected side.
Here's what bell's palsy is, as well as signs and symptoms. ... but do know that it happens when one of the nerves that controls muscles in the face becomes injured or stops working properly ...
So, a lesion on the left side would inhibit muscle innervation from both the left posterior and anterior routes, thus paralyzing the whole left side of the face (Bell’s palsy). With this type of lesion, the bilateral and contralateral inputs of the posterior and anterior routes, respectively, become irrelevant because the lesion is below the ...
With Bell's palsy, the nerve that allows muscles to control facial expression stops communicating with the brain - giving the appearance of half the face being frozen. It can't move, and so for ...
The most common cause of this is Bell's palsy, the ultimate cause of which is unknown. [16] Patients with Bell's palsy often have a drooping mouth on the affected side and often have trouble chewing because the buccinator muscle is affected. [3] The facial nerve is also the most commonly affected cranial nerve in blunt trauma. [20]
According to the National Institutes of Health, Bell’s palsy is a neurological disorder that causes paralysis on one side of the face. This can happen when a facial nerve becomes injured ...