Symptoms and Causes of Bell’s Palsy

Alsaiti, Omar (2022-08-16)

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Bell's palsy is the most frequent acute mononeuropathy, or condition affecting a single nerve, and the most prevalent diagnosis related with facial nerve weakness/paralysis. It is named after Scottish anatomist Sir Charles Bell. Bell's palsy has a rapid onset (<72 hours), can affect men, women, and children, but is more frequent in people aged 15 to 45, individuals with diabetes, upper respiratory illnesses, or impaired immune systems, and women who are pregnant.1 The condition causes a partial or complete inability to move the affected side of the face's facial muscles voluntarily. There is currently no known etiology. Strokes, brain tumors, tumors of the parotid gland or infratemporal fossa, cancer of the facial nerve, and systemic and infectious disorders like zoster, sarcoidosis, and Lyme disease are all possible causes of facial paralysis.2 The facial paresis/paralysis can produce substantial transient oral incompetence as well as an inability to seal the eyelid, which can lead to eye damage. Bell's palsy is diagnosed when no other medical cause of facial weakness can be found.

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