What is ADHD?
ADHD (attention deficit hyperactivity disorder) is an ongoing behavior disorder typically diagnosed at age five or six, although the symptoms have usually been observed much earlier than this age. The three key symptoms are hyperactivity, impulsivity, and inattention. These symptoms typically interfere with the child's functioning in social and academic settings. The diagnostic criteria were outlined in 1994 in the Diagnostic and Statistical Manual of Mental Health (DSM-IV; American Psychiatric Association). To meet the diagnostic criteria, these symptoms, exemplified below, must have been present for at least six months.