Rheumatoid Arthritis Support Group
Rheumatoid arthritis is a chronic, inflammatory, multisystem, autoimmune disorder. It is a disabling and painful condition which can lead to substantial loss of mobility due to pain and joint destruction. The disease is also systemic in that it often also affects many extra-articular tissues throughout the body including the skin, blood vessels, heart, lungs, and...
Many people with PsA test positive for HLA-B27. But it's not a conclusive test [there is no blood test for PsA that I'm aware of]. If you test positive for HLA-B27 it might warrant more consideration to a PsA diagnosis.
Again - both diseases are treated with the same meds.
And in case you were wondering, about 1 in 5 cases of PsA don't have Psoriasis. However....remember that your scalp and nails are also skin. In my case, I've never had psoriasis on my body. I did, in the very beginning, have a dastardly case of dandruff for a few months. And to this day, if you look at one of my fingernails, it has ridges in it the run in the same direction of the length of the finger. These are signs of PsA, too. And yes, it's just as painful as RA.
Wishing you the BEST! We are here to support it.