Facial paralysisDefinition Facial paralysis is the total loss of voluntary muscle movement of one side of the face. Considerations Seventy-five per cent of cases of facial paralysis in adults are caused by an inflammation of the facial nerve called Bell's palsy. This disorder (probably derived from a virus) is common, affecting 25 out of 100,000 individuals per year. It is more common in people with diabetes. It usually affects one side of the face (very rarely both sides at one time), causing a drooping mouth, drooling, and excessive tearing from one eye. Paralysis occurs within a few hours to a few days. There may also be a loss of taste on the front of the tongue on the affected side of the face. Sound may also seem louder on the affected side (hyperacusis). While the facial distortion usually improves over time, there may be some permanent deformity in 20% of individuals. Full recovery is less likely in older people, as well as those with hyperacusis, loss of taste, and severe paralysis. Recurrence of paralysis on the same side or the opposite side occurs in 1 in 10 people. In facial paralysis due to stroke, the eye on the affected side can be closed and the forehead can be wrinkled. This is not possible with Bell's palsy. Other muscles on one side of the body may also be involved with a stroke. Facial paralysis due to a brain tumor generally develops gradually with accompanying headaches, seizures, or hearing loss. In newborns, facial paralysis may result from birth trauma. Common Causes
Home Care Treatment depends on the cause. Follow your health care provider's treatment recommendations. Sometimes steroids and acyclovir may be given depending on the cause. If the eye cannot be fully closed, the cornea must be protected from drying out with prescription eye drops or gel. Call your health care provider if
What to expect at your health care provider's office The medical history will be obtained and a physical examination performed. Medical history questions you may be asked include:
The physical examination will include a detailed neurological examination. Diagnostic tests that may be performed include:
INTERVENTION Arrangements may be made for physical therapy, speech therapy, or occupational therapy, if appropriate. If facial paralysis from Bell's palsy persists for more than 6 - 12 months, plastic surgery may be recommended to improve eye closure and facial appearance. Illustrations
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