if you go to the er they have to treat you even if you need charity care. bring a pamphlet on rsd and tell them you need something to help manage the pain. if they can't do that then i would ask them to refer you to someone who can. there are pm drs out there who can help you manage your pain with meds, nerveblocks, pt etc. and try to do your own research at home too to find pm dr who can help rsd patients. hope you find some relief soon. i know it's hard but don't give up looking for a dr who can help you. take care.
p.s. i know it's scary when your hurting and you can't find a dr who can help, but keep trying to look for a good pm dr. cymbalta didn't help me at all, but gabapentin does and also a strong pain killer helps that my pm dr prescribes to me. if i were you i would look for a pm dr who knows how to treat rsd properly so that he prescribe the right meds to manage your rsd pain. i also take advil to bring down inflammation that rsd causes me. sending soft hugs your way.