If you don't get the skin thing cleared up you may want to see dermatology. I had a rash one doc thought was just neurogenic CRPS stuff but it came up suddenly so I knew otherwise. Then a couple docs saw it because I had follow ups scheduled and thought it was shingles (on my CRPS foot). I finally went to dermatology when it didn't clear, she did a biopsy because it just looked weird and of all things I had athletes foot on the top of the foot in an atypical presentation. It wasn't CRPS at all. Crazy! Maybe our CRPS limbs are just more susceptible to other stuff.