A condition where there is temporary weakness or paralysis in the facial muscle is called Bell’s palsy. What ultimately causes Bell’s palsy to occur is when the nerve that controls the facial muscles gets inflated, swollen or compressed. When a person gets attacked with this problem, his face will appear like it has been droopy and paralyzed.

Bell’s palsy occurs when there is an inflammation or swelling in the nerve that controls the facial muscles of a person. There are no direct causes of Bell’s palsy but there are many factors that may lead to the inflammation or swelling of the nerve. Some of those factors include herpes simplex, HIV, lyme disease, neurosarcoidoisis, and some risks such as pregnancy, diabetes, lung infection or family history.