I've been dealing with Workers Comp for almost 5 yrs now. My shoulder is in constant pain, burning, freezing cold to the touch at times, swells and just aches. I've been on meds for a few yrs now. W/C sent me to a pain specialists and he wants to do a sympathetic nerve block? this sounds terrifying to me, has anyone had one, does it help, and has anyone had it go bad on them? Please let me know all information, is there another way to deal with the pain etc