You can have a blood test that would indicate this.

Most likely

Definitely get a referral to see a rheumatologist.

I'm 58 yrs old, and starting to ache, hips, lower back ,arms sometimes ! How do us with psoriasis know whether it is psoriatic arthritis or not?? I'm thinking like you that it is. I take Mobic daily for inflation and it's like an easier ibuprofen on your stomach and liver. But how do we know? Is there a test?

I have the same thing, the last year has been very trying. I am seeing a new doctor today to see if I can get some help for this. I will let you know what I find out. Hope you feel better.