I have psoriasis on my elbows and scalp. It's not too bad, but my mum has it too and she broke out all over when she had me (her first) So I worry for when I finally conceive.
Not sure on the male fertility side, but I don't see how they could be related.

I use a lotion called 'EXOREX' and it's the only thing that works! It gets a little bit redder at first, but then it almost completely disappears.