I now have a permanant scs in from a surgery gone wrong... For the trial it went smoothly, I can say that you will be able to notice if it really helps immediately-1day. I had mine in for 3 days, and then it got removed so we can get the permanant one in. I pretty much laid and watched movies while it was in. You will be able to tell if it works for you. I am 19 and have one all the way up and down my back. Mine was taped up on my back- When they took the tape off it tore my skin off so be prepared. Also if it is in your neck, having to sleep and live in a neck brace for 6-8 weeks gets frustrating because you arent able to drive because you can not move your neck. The worst thing about getting it in was the post op pain afterwards. It relieved about 60% of my RSD pain, which was like 100% for me. The incisions are deep and from getting cords put up your back your muscles spasm. I used lidoderm patches and had considerable amounts of relief from the muscle pain. And I can say being 2 days shy of 8 weeks after surgery, when you turn or move the shocking is less. It gets better day by day after it scars in. But sitting against hard chairs or something that pushes into your back makes the stimulation stronger.
Also, before I had it put in my hand looked like mold and was hairy as a monkey and finally 6 weeks later it looks more normal than I have seen it look in months!!
Say a prayer, and let the healing begin!