With my diagnosis, suddenly my life made sense. I resolved to learn everything I could about ADHD. What I learned was that women (who represent about 50 per cent of adults with the condition) are grossly under-diagnosed. We're just discovering why, but the fact that girls and women have slipped through the cracks has left a legacy of unmet potential. I should know. As a woman with a lifetime of über-disorganization, chronic lateness, serial job losses, hypersensitivities, and relationship breakdowns, I can attest to the destruction of undiagnosed ADHD.