For most individuals with ADHD, symptoms persist at least into late adolescence and early adulthood—often much longer. For many, this disorder of the brain’s management system not only persists, it becomes more problematic during the inevitable challenges of early adulthood in which one has to manage much more for oneself. Yet, in the years of transition to adulthood, obtaining adequate assessment and treatment for ADHD is often more difficult than at any other point during the lifespan.