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Bell's palsy

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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.

Primary Medical Reviewer Anne C. Poinier, MD
- Internal Medicine
Specialist Medical Reviewer Colin Chalk, MD, CM, FRCPC
- Neurology
Last Updated August 8, 2007

WebMD Medical Reference from Healthwise

Last Updated: August 08, 2007
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