John - just noticed a post you did where you mentioned the hammer toes. In 2016 I had gone to the University of PA Hospital, they have a neurologist there who specializes is inherited PN. Just one of the many things I' ve gone through to determine cause of my non-diabetic neuropathy. He checked my blood work for Charcot Marie Tooth and he kept asking me more than once about any family member with hammer toes, as you know, a symptom of CMT. Interesting, I had a grandmother who had hammer toes each foot. The blood work came back with what he called weak outside markers but not strong enough to cause my PN.