Hi, Im unaware of what shingles feels like (thankfully) but the nerve damage, or neuropathy, in my legs felt like a burning painful pins and needles sensation, with constant cramps and muscle spasms, which I suffered with for 2 years, trying different drugs, the main one being gabapentin.
A doctor recommended trying Quinine and within a week all the pain had disappeared. I still have the numbness, and get the occasional cramp, but the Quinine changed my life. 200mg Quinine Sulphate every evening.
Hope this helps,
James