Bell's palsy is a temporary weakness or paralysis of the muscles on one side of the face. These facial muscles are controlled. Since there facial nerve on both sides of the face of a person, and Bell's palsy usually affects just one nerve, people in Bell's palsy is likely to notice stiffness or weakness on one side of the face.
When the facial nerve is working properly, brings many of the messages from the brain faces. These messages can be said to close the eyelid, one side of the mouth to smile or frown, or salivary glands make saliva. Facial nerves also help our bodies make tears and taste favorite foods. But if the nerve swells and is compressed, as in Bell's palsy, these messages are not sent correctly. The result is weakness or temporary paralysis of muscles on one side of the face.
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