Anxiety or Lupus

I am currently on 25mg of zoloft and lmg of ativan if needed for anxiety.  The last month I have some weird symptoms that I have never experienced with anxiety before.  I get a hot burning itchy flushing feeling that starts on my back, then neck and my face around my nose and chin get burning and itchy and turn red and the upper part of my arms near my wrists.  It makes me feel very irratable and then I do start to feel anxious.  Has anyone had this from anxiety...its almost daily now.  I am going to see my doctor again on the 4th as I have been tested (blood tests) for Lupus but when I read the Lupus site they say that is a hard disease to diagnose.