Don't have an "official" diagnosis, am probably (almost certainly) not ADHD. Almost certainly autistic. My therapist seems to agree (among other people) but can't give me a diagnosis officially or say yes officially, but it's treating me as if I am and it's validating.

Probably won't get an official diagnosis though, there are no real treatments for it, and if I ever want to move abroad, it'll add a lot of additional hurdles. I still struggle to say I'm autistic (because it's not official).