Attention-deficit/hyperactivity disorder (ADHD) is a fairly common neurodevelopmental disorder. It is currently assumed that about two-thirds of children will "continue" with the disorder into adulthood.
The main symptoms of attention deficit disorder are divided into three main areas: attention and concentration difficulties, hyperactivity (overactivity) and impulsivity. In most cases, in older ages, the manifestation will be more refined, especially in the area of hyperactivity and overactivity.