 It was classified in the World Health Organization's ICD-10 and was roughly similar to the "combined presentation" of attention deficit hyperactivity disorder in the American Psychiatric Association's DSM-5.However, in the ICD-11 the entry for hyperkinetic disorder no longer exists and is replaced by a"ttention deficit hyperactivity disorder".Hyperkinetic people display disorganized, poorly controlled and excessive activity; they lack perseverance in tasks involving thought and attention, and tend to move from one activity to the next without completing any.