(HealthDay News) -- Bell's Palsy is a condition in which the muscles of the face become temporarily paralyzed. It's usually caused by injury or damage to nerves in the face, and most often only affects one side of the face, says the National Institute of Neurological Disorders and Stroke.
Symptoms of Bell's Palsy include weakness on one side of the face, twitching, droopy eyes or mouth, drooling, tearing, dry eye, or dry mouth.
Most people with Bell's Palsy improve within two or three weeks, often without treatment. The most successful way to prevent additional symptoms is to determine and eliminate the cause of the nerve damage.
Within three to six months, the NINDS says, the majority of people with Bell's Palsy are symptom-free.
