Lyrica is good for such pain but BEWARE - it can damage or destroy synapses in the brain. Try it, and when the pain subsides replace it with curcumin with black pepper. This has worked for me for the last four years. Peripheral neuropathy crippled my right foot by causing it to drop. I know what you have been going through!
My Dr put me on Cymbalta & it has totally helped my nerve pain. Not gone completely, but helped. Also helped my depression. There's a genetic for it now, too. Be sure your shoes & socks fit properly, too. Compression knee high socks also helped me. Good luck!
I just started using L-Arginine -- I read that Dehydroepiandrosterone (DHEA) levels tend to be low in diabetics and treatment with DHEA is believed to be beneficial in peripheral neuropathy. ... L-Arginine helps supply nitric oxide for wound healing and improves circulation, which can be of great benefit in diabetic peripheral neuropathy. I am going to give it at least 3 months -- will keep you all posted.
After being diagnosed with a magnesium deficiency, restoration of normal levels improved my symptoms substantially.