Attention-deficit/hyperactivity disorder or ADHD is a chronic mental disorder characterized by inattention, hyperactivity, and impulsivity. This course examines the history and etiology of ADHD. We explain its sub-types and the secondary problems found in ADHD children. The course material also answers complex questions like: "What is the combined subtype?" or "What is the nonpharmacologic treatment used for children?". Registration is free.