> As someone with an Adult ADHD diagnosis, this has definitely been my experience. Adults weren't even being diagnosed with ADHD when I was a child and it was never brought up when I showed the signs in school. Now I'm receiving treatment and thankful for it, and my kids will be screened.

Same here in all respects.

> But measuring the per capita diagnosis rate won't tell you anything about that.

I believe that some of the increase in diagnosis rates is because of increasing diagnosis in historically under-diagnosed groups, especially in the US where access to healthcare hasn't been available to everyone.

https://www.additudemag.com/race-and-adhd-how-people-of-colo...