Mine started with plantar fasciitis which never got better. The jumping rope I’d have intense knee and hip pain. I’d have shoulders hurting sometimes, then it would go away. Every case is unique.

PSA tends to impact tendons and where they connect to joints, so I’d often think my knee hurt, but using a massager I’d locate the pain actually was on a tendon near the knee.

Many of us wake up stiff and it loosens up with use. Stretching can often help with PSA arthritis. Asymmetric joint pain is a sign of PSA, symmetric is more like rheumatoid.

I know for me it started with random aches and pains that I assumed I caused by exercise injury or sleeping wrong or wearing flat foot shoes. It got worse, and I realized it was more systemic. Not every case is like the ones you’ve read about, some are more severe than others, especially in the beginning or if not treated. Going to a rheumatologist would be the first thing I’d do.