A behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity. Although most individuals have symptoms of both inattention and hyperactivity-impulsivity, one or the other pattern may be predominant. The disorder is more frequent in males than females. Onset is in childhood. Symptoms often attenuate during late adolescence although a minority experience the full complement of symptoms into mid-adulthood. (From DSM-V)

Synonyms: Syndromes, Hyperkinetic, Attention Deficit Hyperactivity Disorders, Attention Deficit Disorder with Hyperactivity, Attention Deficit-Hyperactivity Disorder, Brain Dysfunction, Minimal, Minimal Brain Dysfunction, Deficit Disorders, Attention, Deficit-Hyperactivity Disorder, Attention, Attention Deficit Disorders with Hyperactivity, Deficit-Hyperactivity Disorders, Attention, Attention Deficit-Hyperactivity Disorders, Attention Deficit Disorder, Deficit Disorder, Attention, Hyperkinetic Syndrome, Attention Deficit Hyperactivity Disorder, Attention Deficit Disorders, Disorder, Attention Deficit, Disorders, Attention Deficit, Disorders, Attention Deficit-Hyperactivity, ADDH, Dysfunction, Minimal Brain, Disorder, Attention Deficit-Hyperactivity