Knowledge Library

ADHD

Learn about attention, organization, impulsivity, restlessness, executive functioning and evidence-based support.

Understanding This

Attention-deficit/hyperactivity disorder is a developmental condition involving persistent patterns of inattention and/or hyperactivity and impulsivity that interfere with functioning. ADHD begins in childhood, but symptoms can continue into adulthood and may look different as a person gets older.

What Someone May Experience

Difficulty sustaining attention

Being easily distracted

Disorganization

Poor time management

Forgetfulness

Difficulty finishing large or multi-step tasks

Restlessness or a need for activity

Interrupting or acting before thinking

Procrastination and difficulty beginning tasks

What May Help

A proper professional evaluation

Medication when appropriate

Psychotherapy or behavioral interventions

Parent education and school supports for children

Practical systems for planning, reminders and organization

Addressing sleep or other conditions that may occur alongside ADHD

When to Reach Out

Evaluation can be useful when attention, organization, impulsivity or restlessness are persistent and causing problems across work, school, relationships or daily responsibilities.

Related SAGE Resources

Trusted Sources

These are the organizations SAGE used to build and verify this information. They are shown for transparency. SAGE does not send you away from this page automatically.

National Institute of Mental Health — ADHD


                        https://www.nimh.nih.gov/health/topics/attention-deficit-hyperactivity-disorder-adhd

NIMH — ADHD: What You Need to Know


                        https://www.nimh.nih.gov/health/publications/attention-deficit-hyperactivity-disorder-what-you-need-to-know

Information checked: 2026-09-28