Attention deficit hyperactivity disorder persists (ADHD) into adult life in 10 to 60 percent of childhood cases, and is present in approximately 4.5 percent of adults. Some ADHD symptoms may persist in adults even though they no longer meet full diagnostic criteria. The typical adult with ADHD complains of difficulty getting started on tasks, variable attention to details, difficulties with self-organization and prioritization, and poor persistence in tasks that require sustained mental effort.1–7 He or she may struggle with impulsiveness and low frustration tolerance. Hyperactivity is unusual but the person may describe a sense of inner restlessness.