Bell's palsy causes paralysis or weakness of the muscles on one side of
the face. It results from facial nerve paralysis that causes the affected side
of the face to appear flat, expressionless, or droopy. Taste sensation and tear
or saliva production can also be affected.
Anne C. Poinier, MD - Internal Medicine & Colin Chalk, MD, CM, FRCPC - Neurology
How this information was developed to help you make better health decisions.