I've had psoriatic arthritis for about 10 years now, it's 6 years since I've known what it actually was. I've seen countless doctors and specialists and I've never been told that there is more than one type. There are many types of Arthritis ... perhaps that is what you meant? I have been told by many docs that it is considered the most painful type.
Now the good news ... ENBREL !!! I tried a bunch of other drugs over the years to try control this disease with no luck ... but Enbrel is literally a miracle drug. I never really had psoriasis that I am aware of for certain so I can't say what it does for that part of it. My problem is that I took so long to be diagnosed and alot of damage has been done (couple surgeries req.) so I continue to live in much pain and am still limited to what I can do in life. But if you can get this drug into you before the damage is done you may go on to live a completely normal life from there on. I've been using Enbrel for a little over 2 years now ... I guess we'll see how long it keeps working.
So DrGothican, don't just accept to live with it ... keep plugging on ... ask your doc about Enbrel ! It is expensive at about $1500 per month here so you'll likely need some kind of drug plan (assistance) to able to try it. You should know in a month or two whether it is working for you. I would have paid 10 x that if it would have helped me in the beginning ... I'd still be living my life to the fullest now.
good luck !!