Ok this might sound weird.. with my last pregnancy prior to it I had pretty bad psoriasis. When I got pregnant my psoriasis completely went away and I had clear skin. After my pregnancy it came back full force and along with it came psoriatic arthritis that got from mild to severe in a matter of months.i now have had to take biweekly injections to keep it under control and I will be on this medication for the next few years at least. I feel like this happened because of my pregnancy, but I'm not sure.