I have had only 2 SGB
I had them 2 days apart, the first one no real relief...the 2nd one both my arms went completely cold....felt like ice cubes. My PM put me on Norvasc for circulation immediately. Two weeks after that RSD spread to both feet. That was a year ago last month. I still can't believe I'm battling this monster.
My RSD started with Carpal tunnel release surgery Summer 2006, diagnosed January 2007.
I know the blocks are the first defense against RSD and once I saw the right doctors they did act fast. My surgeon dropped the ball...
Good luck Desi...I enjoy reading your posts, you're so supportive to all on here

Jeanne