WOW! Thank you all for support and great advice.
I have to say I am lucky, because for this round of PT, I actually had a therapist that has experience with CRPS patients. I am moving my arm better, but I still can't figure out why the flare up happens and when it will happen. This morning for example, my hand has been fine, then 2 hours after I woke up, it just began with the pins and needles, color and temp change. I wasn't doing anything at the time, just sitting down watching the morning news.
It's strange because sometimes I feel like it is fine, then BOOM, a flare up that will last for hours on end. Has this happened with a lot of you??