Bell’s palsy is a weakness or paralysis of the muscles on one side of your face. Damage to the facial nerve that controls muscles on one side of the face causes that side of your face to droop.
In most cases of Bell’s palsy, the nerve that controls muscles on one side of the face is damaged by inflammation.
Many health problems can cause weakness or paralysis of the face. If a specific reason cannot be found for the weakness, the condition is called Bell’s palsy.
Symptoms of Bell’s palsy include:
Sudden weakness or paralysis on one side of your face that causes it to droop. This is the main symptom. It may make it hard for you to close your eye on that side of your face.
Eye problems, such as excessive tearing or a dry eye.
Loss of ability to taste.
Pain in or behind your ear.
Numbness in the affected side of your face.
Increased sensitivity to sound.