The Real Cause For PSA and Psoriasis???

I am a 48-year-old male. I was born with CP on my left side and suffer with the problem in my left leg too this day. I had knee surgery at 13 so I could walk properly (it kind of worked). Now let's move onto other surgeries...

I had my appendix removed, I had two hand surgeries for bacterial infections that nearly cost me my life back in 1992, I was put on some serious medicine that was very scary. Now just 4 years after my last surgery I started to develop Psoriasis spots on my body. They started to "Mirror" each side of my body until I was 80% covered with burning bleeding sores. I started out visiting Dermatologists but my case IS extreme. I ended up going to a Rheumatologist and I was diagnosed fully with PSA back in 2008 all though I was diagnosed with Psoriasis back in 1995. I started taking Enbrel injections twice a month. This was not doing the job or helping. Then I was placed on Humira and Methotrexate.

The Humira started to work on the Psoriasis but did nothing for my Arthritis. The Methotrexate made me feel very odd, So I told the doctor I did not want to take the cocktail of drugs. I got really scared from taking these drugs just like I am currently taking. I stopped using Humira when the pain continued and I noticed the Psoriasis was coming back. Big Mistake. My Psoriasis came back with VENGENCE. It put me back in the hospital covered again with 80% coverage and same horrible symptoms. I now visit a Dermatologist and I receive 1 Stelara injection every 3 months. This dosage does help, but is not enough medicine to eliminate my joint pain, and my body has become somewhat immune to these Bio-medicines and without proper doctor care the Psoriasis still flares up and the joint pain is immense daily, everyday. I now will get back to my question? What really caused my PSA??? I am not a doctor, but rather a disabled Master Carpenter who dedicated his career to construction work.

But these are my suspicions that have caused my problems, 1-Born with Cerebral Palsy..2- Exposure to too many operations and something triggered these problems (ex-nerve damage).3- Hereditary.. 4-Environment.These are my only hypothesis. My fear is not getting the help I need and suffering with CP & PSA is a cruel joke. I used to climb ladders, now I can barely climb out of bed. God Bless All who suffer. You are not alone.