The level of impairment associated with a disorder of the facial nerve can be estimated based on the AMA criteria.
Parameters:
(1) loss of taste
(2) unilateral or bilateral facial weakness
Loss of Taste |
Facial Weakness |
Percent Whole Person Impairment |
none |
none |
0% |
complete loss of taste in anterior tongue |
mild to moderate unilateral weakness |
1 – 4% |
NA |
severe unilateral weakness; mild to moderate bilateral weakness |
5 – 19% |
NA |
severe bilateral weakness |
20 – 45% |
where:
• Severe weakness may involve > 75% facial involvement and the inability to control eyelid closure.
Specialty: Sports Medicine & Rehabilitation, Neurology
ICD-10: ,