Penguin,

I questioned my RSD/CRPS dx,too, each time I went to see my PM doctor. He confirmed the dx every visit, and told me that I need to accept this fact and learn to live with this culprit. My psychologist explained to me that I "say" I understand the dx to be true;however, my "need" to undo this fact is apparent when I question the dx.
As time passed, my symptoms became more obvious, as my body has endured a quick spread of this monster. I am not saying that you are in denial of your dx, I am sharing my experience in my denial of my dx. I have accepted this fact;however, RSD has not detoured me from living my life. I am not as active as I once was before the dx. I take a cocktail of many meds to ease the pain. My outlook on Life is held in high regard for the blessing of still wanting to be active again. Hope in a cure, or at least remission, is the blessing.

Get a second opinion, ease your worries. I do hope that you do not have RSD/CRPS. I am here for you.