Bell's palsy has no recognized etiology. Bell's palsy patients experience swelling and irritation of the cranial nerve VII. The condition is thought to be caused by the reactivation of an existing (dormant) viral infection, according to most scientists.
Bell's palsy causes facial paralysis in the majority of people. After around two weeks, you should see a steady improvement. The majority of persons regain full facial motion and function within three months.
There are several illnesses that resemble Bell's palsy but are medical crises, such as stroke. If you detect facial weakness or drooping, you should seek emergency medical attention. Although Bell's palsy can be frightening, it is rarely life-threatening.