Anybody know anything about psoriatic arthritis?

[Warpy]

10. It you've had red,scaly patches of skin that either sting or itch

or a chronically itchy scalp, could be. However, you need a referral to a rheumatologist. Auto immune diseases tend to run in families, thanks to the Neanderthal genetic heritage that allows us to resist disease better. Some of those ancient genes go a little haywire and autoimmune disease is one result.

Your GP can run things like rheumatoid factor and ANA but it will take a rheumatologist and an immune panel to nail down a diagnosis.

The good news is that if you're fairly young and healthy, the monoclonal antibody drugs (the ones that end in -mab) can work wonders and put you into complete remission. There are a whole lot of less drastic drugs that can help relieve symptoms and slow progress.

Tl:dr Your primary care doc can run some preliminary stuff but it will take a rheumatologist for a diagnosis and even if you get a diagnosis, your life is far from over. Treatments have progressed very fast since I was diagnosed with a different autoimmune disease.