hmm I passed out a couple of times after starting with lyrics, its totally out of my control, but I have read that because of the red that our heart rate goes from fast to slow so quick at times that it can cause you to black out. it could also be your mix of meds. also could be a way that YOUR body responds to pain. some people cannot cope with that much pain so the body shuts down. again a beast thing as it is different with each person. I hope you can find an answer soon. .. and why if you diagnosed with RSD is your insurance denying a neurologist. hello it is a nerve , auto immune, orthopedic, vascular, ..well all around infliction. but hello R= reflex, S= sympathetic(as in sympathetic nerve) D dystrophy.(usually applied to a neurological disorder. good luck man .