Attention-Deficit Hyperactivity Disorder (ADHD) is a well-known diagnosis, the symptoms of which revolve around functional impairment due to excessive inattention, impulsivity, and distractibility. Individuals with ADHD often struggle, achieve below their expected level of ability, and are frequently frustrated by the demands of day-to-day activities. Consequently, accurate diagnosis and effective treatment of attentional problems is essential to maximizing one’s potential. Although characteristics of Attention-Deficit Disorder are generally observed in early childhood and a diagnosis is often made before a child completes first grade, symptoms may be masked by stressful life circumstances or other factors, and the disorder may go undiagnosed well into adulthood. Evaluation for ADHD can be completed by a variety of healthcare providers and typically involves gathering a detailed life history, reviewing results of patient questionnaires, and attention-span tests.