Hey @tsstephenson, my husband experiences the same bouts of stinging pain. Have you gotten any answers?
Try a pain clinic if a neurologist doesnt help. I don't take pain killers for my undiagnosed burning pain, but I take Cymbalta and Pamelor. As soon as I started taking Pamelor - my pain decreased. It's an antidepressant. Hope some of that helps. I have been to a neuro - he's still helping some, a pain clinic and a psychiatrist. Strangely enough, the psych gave me the Pamelor, which decreased the burning pain immediately, but not completely. Hang in there!