Hi Summertime, I don't know about RSD and shingles, but I thought I had shingles one time and my Dr. said it wasn't shingles. I've had various times that I've broke out in a red rash and or red dots. that hurt , itch. They are on various parts of my body. Not fun. He said it's important to always use sunscreen when out in the sun. Take care, Loretta