Attention-Deficit/Hyperactivity Disorder Disease Summary

Last updated: 18 May 2026

Overview

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder defined by impairing levels of inattention, disorganization, and/or hyperactivity-impulsivity, as stated in the Introduction section.

Attention-deficit/hyperactivity disorder is a highly prevalent psychiatric disorder worldwide, particularly affecting children and adolescents. A detailed discussion about the prevalence of ADHD is in the Epidemiology section.

Attention-deficit/hyperactivity disorder is multifactorial, involving genetic, neural, and environmental factors. Discussion in the developmental process of ADHD is in the Pathophysiology section.

The Risk Factors section enumerates the conditions that are associated with the development of attention-deficit/hyperactivity disorder in these children.



Attention Deficit Hyperactivity Disorder_Disease SummaryAttention Deficit Hyperactivity Disorder_Disease Summary

History and Physical Examination

The Clinical Presentation section describes the clinical features suggestive of attention-deficit/hyperactivity disorder.

The History section enumerates the important information to ask the parents or guardians of children suspected of attention-deficit/hyperactivity disorder. The Physical Examination section outlines the key assessments for these patients.

Diagnosis

The Diagnosis or Diagnostic Criteria section features the DSM-5-TR criteria used to diagnose attention-deficit/hyperactivity disorder.

Other conditions that should be considered in the diagnosis of attention-deficit/hyperactivity disorder are listed in the Differential Diagnosis section.

Management

Other assessments and associated conditions of attention-deficit/hyperactivity disorder are discussed in the Evaluation section.

General therapy principles and management of attention-deficit/hyperactivity disorder are in the Principles of Therapy section.

The Pharmacological Therapy section discusses stimulant medications and alternative agents as therapeutic options for children with attention-deficit/hyperactivity disorder.

The Nonpharmacological section includes things to educate the patient, parent or caregiver, and school personnel about the management of attention-deficit/hyperactivity disorder. Psychosocial treatments are also discussed in this section.

The Monitoring section identifies indications for follow-up in children with attention-deficit/hyperactivity disorder.