thanks for all the info, my rsd was from hip replacement surgery 10 years ago. it was lower left foot, then leg, then right foot ... and i have either reynaud's in my hands or rsd ... who knows??? no on can tell right now. and nothing is fixable so what the heck! my hands get red and itch under the skin until it hurts if they get cold and they do get cold .... but do not swell.
the rash however is neck and upper chest as if i had on a scoop neck shirt, that area ... but my rsd has effected my bp and heart rate and i am on meds for that so it could be related to that.