Author(s): Swanson JM, Jensen PS, Sergeant JA, SonugaBarke EJ, Taylor E
The combination of inattentive, hyperactive, and impulsive behaviour in children is recognised as a disorder when these behaviours are severe, developmentally inappropriate, and impair function at home and school. The clinical description of this disorder and its labels and criteria have a rich history. Almost a century ago in The Lancet Still1 ascribed impaired “inhibitory volition” and “marked inability to concentrate and sustain attention” to “defects of moral control”. Currently, there are two terms for this disorder: attention-deficit hyperactivity disorder (ADHD) and hyperkinetic disorder (HKD).