06/24/2026
The main issue is that, historically, ADHD assessment and diagnosis often excluded girls and other children assigned female at birth. As a result, many adults have gone undiagnosed for years. But why are so many people receiving a diagnosis now, in their late 30s and 40s?
I think there are two main reasons. First, their children may be going through ADHD evaluations themselves, which can trigger a realization because ADHD is highly heritable. Second, the executive dysfunction associated with perimenopause, which has been well documented across populations, may be particularly destabilizing for individuals with underlying ADHD.