ADHD (attention deficit hyperactivity disorder) is a problem involving lack of attention, over-activity, impulsivity, or a combination of these symptoms. For these problems to be diagnosed as ADHD, they must be out of the normal range for the child's age and development. ADHD is also called ADD or childhood hyperkinesis
ADHD is a long-term, chronic condition. Roughly half of the children with ADHD will continue to have problems with inattention or impulsivity as adults. However, adults are often more capable of controlling behavior and masking difficulties. Statistics show that there is an increased incidence in juvenile delinquency and adult encounters with the law among individuals who had ADHD as a child.