Anyone with Psoriasis ........

Anyone with Psoriasis, or Psoratic arthitis... I have Psoriasis over about 75% of my body for most of my life and have just found out about Psoriatic arthitis, sometimes I get so mad at doctors. I cant beleave that no doctor has ever mentioned Psoriasis arthitis to me, I read about it on the web and asked my doctor... He said "oh well yeah I have heard of it, that could be what's causing your pain" AARRRR Well I was wondering if anyone has info or maybe knows a good website. I've been to National Psoriasis Foundation site and Arthitis society.