I have had severe pain that started in my wrists about 2 weeks ago. I have psoriasis and I have had tendonitis, so I thought it was just those things bothering me. However, over the next few days, the pain got worse and then my fingers started swelling. About 5 days after it started I went to the ER one night because my left arm, from my shoulder to my fingers hurt really bad and had increased in pain and swelling all day. The ER dr. said that my Sed rate was elevated, but not enough to be RA and that my potassium was low. He felt that the arthritis was from my psoriasis and gave me pain meds to take. That was 5 days ago, I still have pain in my shoulders, not as bad though, my fingers are all swollen and my wrists, knees and ankles are swollen. Another thing I've noticed over the last 2 or 3 nights I have been sweating a lot. I go to my dermatologist on Monday,I have been getting Remicade Infusions, but I think I am going to stop them and see a Rheumatologist. Does anyone have any advise as to what else could be causing this?