Yes, I have had improvement. Shingrix did not cause it. In my case – it was from a combination of sciatica due to longstanding lower back dysfunction (probably disc herniation) and the existence of a trigger point in both of my piriformis muscles.(They are in your butt cheeks) I am successfully resolving the symptoms by treating the lower back with what are known as Mckenzie exercises which are a type of physical therapy. But the most relief is occurring from rubbing the piriformis trigger points with a Thera-Cane as described in the excellent book 'THE TRIGGER POINT THERAPY WORKBOOK' 3rd Edition by Clair Davies. Piriformis trigger points can cause all of the symptoms of peripheral neuropathy because the piriformis muscle will be pressing on the nerve that goes right to the feet. If you are not diabetic and have developed peripheral neuropathy, I can only urge you to educate yourself on what I have described. Most doctors (especially older ones) have no knowledge or training about trigger points, but some recently graduated do. In my case – it was unfortunate that the symptoms occurred at the same time as when I got the Shingrix vaccine which was obviously purely coincidental. I hope this information will help somebody out there.