Bell’s Palsy
The Department Of Neurology Cong Lin
George Herbert Bush
Concept
Facial weakness of the peripheral typeidiopathicoutside the central nervous system without any other cranial nerve palsies
Bell’s Palsy:
[Etiology and pathology]
the cause is unclear
exposure to chill
a viral infection
edema degeneration.
Etiology
pathology
Anatomicophysiology
[Clinical features]
Occurs at any age and any time.
unilateralThe onset is acute. attain maximum
paralysis in 48h --5 days. pain behind the ear.
Peripheral facial palsy
[Diagnosis]
based on the acute onset and the peripheral facial palsy.
distinguished from facial paralysis due to other causes
distinguished from the supranuclear one (such as in a stroke)
Prognosis
usually good. recover within a few weeks or in a month or two.
But if there is evidence of denervation after 10 days, one may expect a long delay in the onset of recovery.
Treatment
surgical decompression may be harmful.
take some corticosteroids, such as prednisone (40 to 60mg/day).
Vitamin B antiviral agents may be useful. physiatrics and acupuncture therapy a shield to protect the eye.
summary
The major features of Bell’s palsy is:
Any age, any time.UnilateralAcute Peripheral facial
palsy idiopathic
Bell’s phenomenon
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