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HomeConditionsADHD & Learning DisordersAttention-Deficit/Hyperactivity Disorder
Mental Health Condition

Attention-Deficit/Hyperactivity Disorder

To define Attention-Deficit/Hyperactivity Disorder: A neurodevelopmental disorder characterized by persistent inattention, hyperactivity, and impulsivity that interferes with daily functioning and development.

Overview

Description

Attention-Deficit/Hyperactivity Disorder (ADHD) is a neurodevelopmental disorder characterized by a persistent pattern of inattention and/or hyperactivity-impulsivity that interferes with functioning or development. Symptoms typically begin in childhood, are present before age 12, occur in two or more settings, and cause significant impairment in social, academic, or occupational functioning.

Prevalence

Approximately 5% of children and 2.5% of adults worldwide are estimated to have ADHD.

Age of Onset

Symptoms typically appear before the age of 12, often noticeable in early school years.

DSM-5 Code

314.01

ICD-10 Code

F90.2

By HeyPsych Contributor
Reviewed by the HeyPsych Medical Review Board
Reviewed by the HeyPsych Medical Review Board
Board-certified psychiatrists and mental health professionals
Medical Review Board
Published: August 13, 2025
Last Updated: August 25, 2026
Last Reviewed: August 25, 2026

What Is ADHD?

Understanding the neurodevelopmental disorder affecting attention, impulse control, and activity level

Signs & Symptoms

Recognizing inattention, hyperactivity, and impulsivity across different ages and settings

Getting Diagnosed

How ADHD is properly evaluated and why comprehensive assessment matters

Causes & Risk Factors

The genetic, biological, and environmental factors behind ADHD

Treatment Options

Medications, therapy, coaching, and strategies that help manage ADHD

Living With ADHD

Real voices, daily impacts, coping strategies, and reactions to diagnosis

Real Stories

Detailed journeys of people at different life stages living with ADHD

ADHD vs Other Conditions

How ADHD differs from anxiety, depression, learning disorders, and bipolar disorder

Common Questions

Answers about medication safety, diagnosis, genetics, and ADHD across the lifespan

Medications Sometimes Used

These medications may be prescribed for this condition. Always consult a healthcare professional before starting any medication.

First-Line Treatments

FDA-Approved
  • Methylphenidate (Concerta)
  • Amphetamine/Dextroamphetamine (Adderall)
  • Atomoxetine (Strattera)

Second-Line Treatments

Alternative
  • Guanfacine (Intuniv)

Off-Label Use

Limited Evidence
  • Bupropion (Wellbutrin)

Scientific References

  1. Guideline

    1.American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Arlington, VA: American Psychiatric Publishing.

    View Source
  2. Guideline

    2.American Academy of Pediatrics. (2019). Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents. Pediatrics, 144(4), e20192528.

    View Source
  3. Guideline

    3.National Institute for Health and Care Excellence. (2018). Attention deficit hyperactivity disorder: diagnosis and management (NG87).

    View Source

This information about mental health conditions is for educational purposes only. If you believe you may be experiencing symptoms of a mental health condition, please consult with a qualified healthcare professional for proper evaluation and diagnosis.

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