Hi and welcomet to HCM.
is used for mood stabiliser in affective disorder, and partial epileptic seizures.
So your doctor consider your husband has mood disorders
or this neuralgia
is thought te be a verison of epileptic attack. This isnt usually used if there is nerve
compression but it can stabilize nerve conduction so there can be some benefit from it. The best way is to wait and see wil there be improvement. There are no serious side effects. WIsh you good health.