Bell palsy

Facial palsy; Idiopathic peripheral facial palsy; Cranial mononeuropathy - Bell palsy; Bell palsy

Bell palsy is a disorder of the nerve that controls movement of the muscles in the face. This nerve is called the facial or seventh cranial nerve.

Damage to this nerve causes weakness or paralysis of these muscles. Paralysis means that you cannot use the muscles at all.

Ptosis, drooping of the eyelid

Drooping of the eyelid is called ptosis. Ptosis may result from damage to the nerve that controls the muscles of the eyelid, problems with the muscle strength (as in myasthenia gravis), or from swelling of the lid.

Facial drooping

Facial drooping can be caused by a disorder such as Bell's palsy. This disorder is a mononeuropathy (involvement of a single nerve) that damages the seventh cranial (facial) nerve. The facial nerve controls movement of the muscles of the face.

Causes

Symptoms

Exams and Tests

Treatment

Outlook (Prognosis)

Possible Complications

When to Contact a Medical Professional

Prevention