I had/have a childhood diagnosis, and wish I had some record of it (parents destroyed their copy of my medical records at some point, it wasn't malicious so I'm not too mad at them, but its still gone and that sucks) because it supposedly helps with adult diagnosis. Which i would very much like to get my life together.

Now that I'm thinking about it any privacy aspects are a moot point because the childhood diagnosis would have been from a DoD doctor, so the US government already has that data if they actually go the route of "wellness camps"... so i really should have been pursuing diagnosis this past year regardless of my own paranoia.

Edit: none of that actually answered a question! Sorry lol

Official diagnosis means (generally) not having to through a song and dance routine any time you get a new doctor or move to a different place, explaining why you should be given a controlled substance to function like a "normal" human being.