ADHD Life Journey Late Diagnosis Timeline maps the developmental arc from birth through age 40, tracing how undiagnosed ADHD manifests across early childhood restlessness, school-age struggles, adolescent masking, and early adulthood burnout. The diagram illustrates two critical turning points—academic or social crisis in adolescence and burnout or parenthood in adulthood—that eventually prompt the late diagnosis typically occurring between ages 32–36. Emotional experiences including confusion, self-blame, chronic stress, exhaustion, and imposter syndrome are woven throughout, showing how delayed recognition compounds psychological burden. This timeline validates the common experience of late-diagnosed adults and helps them understand their past struggles within a coherent developmental framework. Fork and customize this diagram to reflect your own journey, share with healthcare providers, or adapt it for peer support and community education.