BELL'S PALSY

 
  
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How does it occur?

Written by : DoctorNDTV Team
Checked by : Dr Chris Allen
Consultant Neurologist,
Cambridge, England

The exact cause of Bell's palsy is not known. It is believed to be caused due to a viral infection of the facial nerve. This infection causes the nerve to swell and press against the bony canal through which it passes into the face. This leads to a failure in the transmission of signals to the facial muscles thus causing paralysis.

  
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