attention deficit hyperactivity disorder

noun [U]

(abbreviation ADHD) UK

Definition

› a condition in which someone, especially a child, is often in a state of activity or excitement and unable to direct their attention towards what they are doing Note: This condition is usually called 'attention deficit disorder' in the US.Mental and psychiatric disorders

(Definition of attention deficit hyperactivity disorder noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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