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Bell's Palsy

Causes of Bell's Palsy

Bell’s palsy is caused by the swelling, inflammation or compression of the nerve that controls facial muscles, which results in weakness or paralysis. Why this happens is not entirely clear, although a few possible causes have been considered, including viral infections, genetics and immunologic conditions. Some scientists believe that Bell’s palsy is causes by a viral infection that triggers an immunologic response, which in turn damages the facial nerve. These infections include herpes simple virus types 1 and 2, human herpes virus, varicella zoster virus, Mycoplasma pneumoniae, Borella burgdoferi, influenza B, adenovirus, coxsackievirus, hepatitis, Epstein-Barr virus, rubella virus, cytomegalovirus, and hepatitis A, B and C. 

Locations for Bell's Palsy