Treatment of Attention-Deficit–Hyperactivity Disorder

Abstract
Attention-deficit–hyperactivity disorder (ADHD) is a common but controversial syndrome characterized by developmentally inappropriate hyperactivity, impulsivity, and inattention.1 The disorder, which continues throughout life,27 usually begins in childhood and is characterized by excessive activity, even when adjusted for developmental level, and limited behavioral control. A severely affected child, in whom behavioral control is absent, is exhausting to care for.ADHD is controversial despite the acceptance of specific diagnostic criteria. That it is an extreme form of commonly occurring types of behavior rather than a disorder with discrete determinants is suggested by genetic studies, including a large study of twins, in . . .