Rash - connected to autoimmune disease?

[rachelxu]

 I recently developed a symmetrical rash on my elbows - large clusters of red spots that itch, but not uncontrollably so.  These areas definitely are not bug bites or a response to poison plants, so I'm trying to figure out what's going on.  I know it could just be run-of-the-mill eczema, but I've never had any sort of skin rash before.   I have rheumatoid arthritis, which has been mildly flared up recently.  Does this sound familiar to anyone?  Could it be related to the RA?

(cross-posted to autoimmune)