Stay on the topamax for the nerve conduction testing. I am sorry that topamax is not enough to keep your pain in check. Most of us are on two or more meds. So, talk to your doc about complimentary medications, like an antidepressant etc... I am on cymbalta, neurontin and lyrica. The addition of lyrica was a god send. I know other folks are on other meds like Ultram. Nerve pain is extremely difficult to manage, but it can be done.

Take care Laurie