psoriasis
"I have tried Enbrel for 9 months and it worked great for both my psoriasis and the arthritis. BUT last July I stopped using it because I wanted to get my wife pregnant. 
And to be sure there was no side effect by using it. And since I stopped using it, the psoriasis and arthritis have come back massively and seems worse then ever. This is a really bad side effect. Also I have got some very weird infections/viruses, etc. that healthy people normally don't get. I have had Zoster Shingles, and Pavovirus. These are immune related illnesses and they must have come because of the lowered immune system. "