I'm not an expert but I think there are specific treatments depending on the cause.

> Is it worth getting diagnosed?

I guess that's a balance against the time and money it will cost you to get a diagnosis vs the benefit. Where I live, cost would be about 3-5 hours and $300-1000 in consultations, blood tests and scans if you're not insured.

Benefits are: being able to halt ongoing joint degradation, preventing or quickly reacting to more impactful flare-ups, making better long-term choices in exercise, diet etc.

But it may be unrelated!