I don't doubt for a second that your account of events leads you to believe it was the acupuncture...because it obviously aggravated whatever was going on. However, since you did already have signs of neuropathy before hand (as for why you sought out the treatment), you need to look into what brought you to this point, just as northerngal stated.

There is a condition called allodynia that is basically a hypersensitivity of pain from stimuli that normally doesn't cause pain. The acupuncture should not have caused you that kind of pain and therefore I wonder if that procedure is the associated stimuli for possible allodynia. If the neuropathy was already there (causing the allodynia), then this stimuli could have easily aggravated the small fiber nerves and caused you intense pain and left you where you are right now.

http://en.wikipedia.org/wiki/Allodynia

But that being said, you need to look back to when your initial symptoms began and focus on the basis of your neuropathy to get to the root of the problem. In the meantime, you should consider testing of the small fibers via skin biopsy (if you haven't already done so). That would give you a good idea if the nerve density is low or if the nerve fibers are damaged. Then other treatment options may be available, based upon the results.

You should give the current medication some time to work (and to get up to a therapeutic dose). If there is no relief, then there are many other options to try...until the root cause is determined (if found).