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-IV)
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exact_synonym:
ADHD; ADHD1; ADHD2; ADHD3; ADHD4; ADHD5; ADHD6; ADHD7; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 1; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 2; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 3; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 4; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 5; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 6; ATTENTION DEFICIT-HYPERACTIVITY DISORDER, SUSCEPTIBILITY TO, 7; Attention Deficit Disorder; Attention Deficit Disorders; Attention Deficit Disorders with Hyperactivity; Attention Deficit Hyperactivity Disorder; Attention Deficit Hyperactivity Disorders; DIGIT SPAN QUANTITATIVE TRAIT LOCUS; HYPERACTIVITY OF CHILDHOOD; Hyperkinetic Syndrome; MOTOR TIMING QUANTITATIVE TRAIT LOCUS; Minimal Brain Dysfunction; Syndromes, Hyperkinetic