Attention deficit hyperactivity disorder is a neurodevelopmental disorder characterized by excessive amounts of inattention, carelessness, hyperactivity, and impulsivity that are pervasive, impairing, and otherwise age-inappropriate.
Attention deficit hyperactivity disorder predominantly inattentive, is one of the three presentations of attention deficit hyperactivity disorder.
Behavior disorder originating in childhood in which the essential features are signs of developmentally inappropriate inattention, impulsivity, and hyperactivity.
A syndrome formerly thought to affect children only, but now known also to affect adults, that is characterized by frequent, chronic distractibility, and either inattentiveness or hyperactivity (fidgeting).
A developmental disorder in which a person has a persistent pattern of impulsiveness and inattention, with or without a component of hyperactivity.