Possible PDA (Pathological Demand Avoidance) ?

I attended a zoom group this morning and came across PDA , which is a new one for me as nobody really talks about it even though it affects so many people. I am aware that you can have this form of Autism , but it is super hard to get diagnosed. I just wanted to see how it affects you , the traits etc on a deeper level. When it was being discussed I suddenly had a lightbulb moment and now i'm addiment my brother has it so wanted to dive into it further. Would be super grateful for any advice on this matter,

Kind regards Amy