Causes

The main cause of Bell's Palsy is unclear. Experts believe that it may be caused by the Herpes virus that causes cold sores. In this case, the nerves on the face become inflammed and can cause paralysis. It may also be caused by an irritation of cranial nerve seven. Cranial nerve seven control all facial muscles and certain salivary glands. This nerve becomes inflamed and swollen within a bony tunnel in the skull. But the cause of this irritation is unknown.

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 * [[image:http://frank.hedlund.homepage.dk/Bells%20palsy%20culprit.jpg width="399" height="369" align="center" caption="This image shows where Bell's Palsy takes place"]]

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