My sister was diagnosed with CRPS in her left foot/lower leg in September of 2009 after fracturing her navicular bone in her foot in January. It has spread and now involves both legs/pelvis and into her left hand. A failed spinal stimulator trial has left her with urinary incontinence. She has been told by her pain management physician that she cannot do anything more for my sister. She is on huge doses of oral meds with little to no relief. She has been evaluated by a CRPS specialist and he wants to repeat the stimulator trial. Does anyone have experience working with CRPS patients? How much is too much when it comes to pain meds? I am a nurse and some days don't know how to help her. Any advice would be helpful.