This chapter describes the problem of hyperactivity along with its assessment; diagnosis, levels of prevention/intervention, primary, secondary, and tertiary strategies for dealing with the behavior, and parenting tips. Hyperactivity is a higher than developmentally normal level of activity; inattention is the lack of required focus to a task or event at hand; and impulsivity means doing things abruptly with little to no thought. Most children have times when they are inattentive, irritable, fidgety, disorganized, impulsive, distracted, or hyperactive. Attention deficit hyperactivity disorder (ADHD) is a psychiatric disorder where children have these types of behaviors most of the time both at home and at school, and these behaviors cause significant impairment or distress. ADHD is a chronic condition; thus children and youth with ADHD have special care needs, and their care should follow the principles of chronic care and the medical home.