Bell’s palsy

Bell’s palsy is a sudden weakness or paralysis of one side of the face. It is caused by inflammation or damage to the facial nerve. It is usually temporary – most people recover fully.
Bell’s palsy is a weakness or paralysis of the facial muscles that usually affects just one side of the face.
It is thought to be mainly caused by an infection with a virus.
The infection inflames or puts pressure on the nerve that controls your facial muscles. It can be mild, or it can be severe.
Most people recover without treatment in 3 to 9 months.
Bell’s palsy signs and symptoms
The main symptom is weakness or paralysis of one side of the face. It usually is at its worst within 2 to 3 days of starting. It can also cause:
• drooping eyelid or difficulty closing one eye
• difficulty smiling and making facial expressions
• drooping of one side of the mouth
• difficulty eating and drinking
• drooling
• pain or sensitivity around the affected area
• headache
• loss of taste
• changes in the amount of tears or saliva
If you develop these symptoms, see your doctor immediately or go to your nearest emergency department.
Bell’s palsy diagnosis
There is no specific test for Bell’s palsy, but it is important to make sure you don’t have a more serious condition like a stroke or a tumor.
Your doctor will diagnose the condition by examining you carefully. You may be referred to a specialist or have tests such as X-rays or CT scans to rule out other causes.
Recovery from Bell’s palsy
You can help your recovery by:
• wear glasses or goggles during the day
• use an eye patch or tape your eye shut if recommended
Most people begin improving within two weeks and recover within 3 to 9 months. A few people don’t recover fully and are left with some weakness or paralysis of the muscles in their face.