Speaking of hand pain: I also have psoriatic arthritis, [a rare skin lesion only], recently developed dypuytren's contracture, bilaterally. Usually middle fingers, occasionally ring fingers affected, both painfully contract several times a day. I've noticed very painful to the touch 'knots' on palmar surfaces as well. The literature on this condition reports that painful hands are not usually demonstrated. Based on my experience, I would refute that.