ADHD is a problem with inattentiveness, over-activity, impulsivity, or a combination. For these problems to be diagnosed as ADHD, they must be out of the normal range for a child’s age and development

ADHD is the most commonly studied and diagnosed psychiatric disorder in children, affecting about 3 to 5 percent of children globally and diagnosed in about 2 to 16 percent of school aged children.ADHD in children is completely different from normal childhood excited and boisterous behavior. Many children, especially very young ones, are inattentive and restless without necessarily being affected by ADHD.