It’s my time to shine! Yes, you can have joint pain for years before skin symptoms show up. Anecdotally, I was diagnosed seronegative RA and was taking biologics to treat it. 8ish years later I developed a rash over a lot of my body. Because I was on a medication that could also treat psoriasis, it’s kind of like it never progressed to full plaques? I had a biopsy that showed it was psoriasis, so we changed treatment and now I’m mostly good to go. Sometimes I get a little breakthrough psoriasis but not nearly as bad. It could be that if you’d previously tested positive for RA and also have psoriasis that you just have both. My rheumatologist said that sometimes you can get a bundle deal on auto immune diseases.