Definition of Attention-Deficit/ Hyperactivity Disorder(ADHD) Attention-Deficit/Hyperactivity Disorder(ADHD) one of the most common mental disorders, affecting 5–8% of children, primarily boys, and often continuing into adulthood. It impacts learning and daily functioning, characterized by three main features:   Inattention – Difficulty staying focused.   Hyperactivity – Excessive movement, fidgeting, or talking.   Impulsivity – Acting without thinking, often leading …

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