I have no experience with SRS, However, i did have both my pain nerves coterized on the left and right side. I keep the nerves from growing back together by using an inversion table.
As for shingles, I nearly had it. But circumventing it by covering the area with paper tape. I realize this sounds crazy, but 7 years ago I had chicken pox. I discovered i could control where they went using white paper medical tape. My doctor is currently doing a study on this very subject. I will recommend putting the paper tape over the area where the pain is for several days and see if the pain stops. This is how I avoided shingles. Like chicken pox it needs oxygen to manifest. And when it did not get the oxygen it needed it went away.
I hope you find this helpful.