--but given your age, and the fairly rapid appearance and progression of your symptoms, two things come to mind: toxic exposure, or autoimmune reaction.

I would be very interested to see your results on the Athena test you reported, but that test is far from complete as reagards antibody tests.

Have you had any of the connective/vasculitic antibody tests for the anti-nuclear antibody and its variants? These antibodies are often found in the autoimmune vascultic/connective tissue disorders, and neuropathy due to vasculitis can flare up fairly quickly:

http://www.neuro.wustl.edu/neuromusc...tml#vasculitis

I'd also suggest you look both at teh Liza Jane spreadsheets at www.lizjane.org and Dr. Latov's clinical research paper (in our useful sites section) on serum tests for neuropathic conditions:

http://www.questdiagnostics.com/hcp/...eralNeurop.htm

This will give you some idea of the number of autoantibodies that may result in neuropathy--this is one reason that searches for a cause are often long and expensive.