Diagnosing non-HIV Kaposi's Sarcoma ?

I suspect I have this. I have limited funds and don''t want to go from one doctor to the next.

I do understand that the only definitive diagnosis would be through biopsy, but I hope to make a "one-stop" visit.

So... dermatologist? An infectious disease doctor with a large HIV practice?

Should I go to my GP and have an HHV8 test done?

Thanks