question: I have CRPS of the upper right extremity.  I have red mottling on both arms and legs.  Now there is swelling in both of my calves, ankles, and feet.  On my ankles and feet there is blue to purple discoloration.  I take nine medications and I dont know if theyre affecting my kidney function or what.  Im quite nervous about the whole issue.  Do you have any idea what might be causing the edema and mottling?