I've taken gabapentin & it has temporarily relieved burning in my lateral ankle. is it safe to say that there is a nerve issue going on there?

No: This type of medication sometimes relieves pain from other causes. Needs proper evalaution.

Yes: Yes, given that Gabapentin is a membrane stabilizer the response would seem appropriate.

Probably: Gabapentin (neurontin) is a medication that can be helpful for nerve-related ("neuropathic") pain. Such pain can have multiple causes- a pinched nerve in the back (radiculopathy or "sciatica"), peripheral neuropathy, and others.

Yes : You need an ncv then rx can be tailored to your vondition.