Diagnosed with PN in June still don't know the cause all blood work has come back normal no diabetes, thyroid problems MRI discovered 2 disc protrusion with annular tear, also moderate lumbar levoscoliosis. was sent to a Physiatrist who did nerve test and believe condition is because of AIPD. Pain started in the feet and progress within two days to upper chest, tried neurotin didn't help now taking tramadol, pain has subsided to the point i can walk without severe pain, still have tingling in feet and legs, shooting pain in right leg. Go back to the Dr. next week waiting to see whats next. I have been reading a lot here.