Bell's palsy is a sudden weakness or paralysis on one side of the face. It is usually a temporary condition however, recovery rate decreases with increasing age.

Bell's Palsy: Facial Droop
Nucleus factsheet image
Copyright © Nucleus Medical Media, Inc.

The exact cause of Bell's palsy is unknown. It occurs as a result of pressure on the nerve, or an infection or inflammation in the nerve.

Pressure may be caused by:

  • Tumors or cancers pressing on the nerve
  • Trauma from head or facial injuries

Nerve infections include: