Paralysis of the facial nerve causing muscular weakness in one side of the face.
- In severe cases (usually during ascent), increased pressure in the middle ear can cause reversible weakness of the facial nerve and Bell's palsy.
- Other viral illnesses such as mumps and rubella may also trigger Bell's palsy.
- Her medical history consisted of hypertension, depression, and a right facial nerve palsy secondary to Bell's palsy.
Mid 19th century: named after Sir Charles Bell (1774–1842), the Scottish anatomist who first described it.
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