Trigeminal nerve paralysis

Medical records that document the extent of trigeminal nerve damage are central to establishing your rating level. A neurological examination showing complete loss of sensation and motor function across all three branches of the nerve — with no remaining function — would support the 50% level. Records showing significant but incomplete loss, with testing confirming severe functional impairment, would point toward 30%. Findings of partial sensory or motor loss, confirmed on examination and consistent with moderate impairment, support the 10% level.

Because the regulation ties the rating to the degree of sensory or motor loss, nerve conduction studies, electromyography results, and detailed sensory testing can help document exactly how much function remains. If your trigeminal nerve involvement is purely sensory, the regulation limits the rating to no higher than the moderate level, so records clearly distinguishing sensory-only from mixed sensory-and-motor involvement are meaningful. Statements from you or others describing how facial numbness, pain, or weakness affects your daily activities and work can help show the functional impact of your symptoms.