Mine first began to spread after I had a lumbar sympathetic block meant to help the RSD in my left ankle. The spread pain started at the injection site in my lower back, then crept up my spine, the to my neck, then shoulders, around to my torso, then down my arms, and eventually to my hands. later...it spread up my leg to my knee, and after a bump from a visiting nephew it spread to my left hip. just last year I had a baby via c section and I now have the RSD internally in my abdomen where they sliced through all the nerves.

Congradulations on the baby, more power to you for not letting CRPS stop your life!
How long did all this take?

The spread throughout my body all happened within a couple months of the block I had...the spread to my abdomen after the c section was immediately after the c section...though it was hard to tell at first if what I was feeling was "normal" or the RSD...but 8 weeks after I had the baby the doctor said the pain should've completely subsided and it was still just as bad.