You are convinced but why is this? I showed an excerpt from the very page that you linked which shows evidence that the etiology of PSSD is different than PFS, why do you ignore this?
Just because there are similarities doesn’t mean that PAS/PFS/PSSD have exactly the same root cause. Its possible that some of the same body systems (IE dopaminergic) are affected identically in each of these disorders but its also equally likely that there are some body systems (androgenic) that are affected in different ways according to each disorder as well. You are trying to oversimplify the issue here. Just to be clear, I am very open minded to the idea that there might be a root cause for all of these disorders, but I disagree with the confidence that some people have for thinking that this is so.