So many of us have multiple issues, not necessarily related to any form of PN
but when we have all these things going on at once, its easy to try to
find a pattern or try to correlate them into a cause for PN.
Most of the time, its just a case of multiple issues, unrelated to PN.....along with PN.
IMHO, if you can afford it, or your ins. covers it - leave no stone unturned in your
search to try to find answers.
Maybe, one of those tests will actually be a 'smoking gun' and lead to better treatment & pain relief.