Bell's Palsy

Causes & Prevention

The Exact Causes of Bell's Palsy are Not Known

Although exact causes of Bell's Palsy have not been found, many scientists believe that the same virus that causes cold sores can cause the facial nerve to become swollen and injured.

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What Does It Mean When Medical Experts Say "Race" Is A Risk Factor For Certain Diseases?

Editor's Note:

"Race" is sometimes mentioned as a risk factor in the development of certain cancers and a number of other diseases. When you read this in a discussion about an illness, note that the explanation seldom refers to anything biological. Instead, it usually refers to behavior, such as eating habits. The kinds of behavior usually mentioned as risk factors are culturally determined. They are not genetic or biological.