A while back, around the same time the idea of ROGD was becoming controversial, I saw a couple articles/studies about "Trans OCD." This was a proposed subcategory of OCD where the person obsesses over whether or not they are trans and compulsively "tests" this with changing their gender presentation and the like.
Haven't really heard about it since, so I wonder if it went nowhere or the psychologists who came up with it were made to shut up.