Bell’s palsy is a form of facial paralysis where the function of the facial nerve is affected resulting in an inability to control facial muscles on the affected side. It usually starts suddenly; a person can find that one side of the face does not move.
Paralysis can be partial or total. It is thought that the inflammation and swelling of the facial nerve is caused by some type of viral infection or autoimmune system response. Many of these problems can be fixed by meticulous plastic surgical techniques.