Approximately 10 million adults have attention-deficit/hyperactivity disorder (ADHD). In early adulthood, ADHD may be associated with depression, mood or conduct disorders and substance abuse. Adults with ADHD often cope with difficulties at work and in their personal and family lives related to ADHD symptoms.  Many have inconsistent performance at work or in their careers; have difficulties with day-to-day responsibilities; experience relationship problems; and may have chronic feelings of frustration, guilt or blame.

Individuals with ADHD may also have difficulties with maintaining attention, executive function and working memory.  Recently, deficits in executive function have emerged as key factors affecting academic and career success. Executive function is the brain’s ability to prioritize and manage thoughts and actions. This ability permits individuals to consider the long-term consequences of their actions and guide their behavior across time more effectively.  Individuals who have issues with executive functioning may have difficulties completing tasks or may forget important things.