This document discusses attention deficit hyperactivity disorder (ADHD) and attention deficit disorder (ADD). It defines them as general terms used to describe individuals with attention and hyperactivity issues. The document outlines key differences between ADD and ADHD, symptoms in preschoolers and primary school-aged children, long-term negative outcomes, and recommended treatment options for children and adults. Treatment may include behavioral modification, stimulant medications, or multimodal therapies combining medication and counseling. The causes of ADD and ADHD can include brain injuries, environmental exposures, prenatal alcohol/tobacco use, premature birth, and low birthweight.