@njed – Ed, I wish I knew if the EB-N5 is helping. Others ask me, too, and my answer is always the same. I'm prepping for my next neurodoc visit (2/28) and that EB-N5 question is at the top of the list. This is the same fellow who had me do a genetic test (cheek swab); I'm eager to learn the results of that test. (My brother, who died three years ago, had terrible neuropathy, but that's about all I know. At the time, I didn't have any PN symptoms, so I never pressed him for information. Now, of course, my neurodoc is asking.) – Ray