I have recently been diagnosed with Psoraisis, and it only flares in summer and gets better in winter, my Dr. 2 says its unusual. I have been on methotraxate, Humira, Cyclsporine and now stelara. I am praying for a break. The nails are the worse for me, when i have a flare up, it is everywhere, red and raw. Nothing helps, but Dr. and I keep trying new stuff.