I had the first nerve block (SGB) done yesterday for the "mild RSD" in my hand/arm. I had no side effects, is that normal? I was expecting something. The pain went from a 6 to a 3 by the time I got to OT. It came back around 2am though. Felt like someone was stabbing me and cutting my arm open from my elbow to my finger tips. Next one tomorrow. I just found it strange that I didn't have any side effects, has that happened to anyone else? Guess I am also dissapointed it didn't last long.