I didn't see your comment until this morning. I have "medium" spinal stenosis increased narrowing in the L-4 to S-1 area and I have tried to convenience the neuro docs that my lower back issues could be cause of PN. The more my lower back becomes painful in past 3 - 4 years, the more numbness increased over same time. No connection? Just a coincidence? Here is where I get these stunned looks ..like what?...from 3 nuro docs... when I simply touch the lower spine area, sitting or standing, I get these kind of chills in ankles and increased feeling across bottom of feet. It lasts 2 seconds. Strange feeling and no answers provided. Oddly enough, I' ve heard from several sources that doctors are trained to and basically agree to this oath "to cause no harm" and I think in some cases, if a surgeon knows for certain they can't promise improvement. they will do nothing. So, no connection between lower spine and numbness? I'm told it can contribute to the numbness but not the cause. Tough to swallow that pill but for now, I have no choice.