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​National ADHD Awareness Month

Month-long awareness observance held October 1 to 31 focused on raising public understanding of ADHD as a neurobiological disorder, combating stigma, and improving access to diagnosis and treatment.

Thursday
1–31
October 2026
Last updated February 26, 2026 · by the Holiday Calendar Team
Have an update or spot an error?
YEARLY DATEAll of October
OBSERVED INUnited States
CATEGORYAwareness
SUBCATEGORYDisability
ORIGIN

Legislative Resolution

FOUNDING ENTITY
U.S. Senate (Sen. Maria Cantwell, sponsor; ADDA, co-sponsor)
FIRST OBSERVED
2004
HOW THE HOLIDAY CAME TO BE

The U.S. Senate passed S. Res. 370 in 2004, sponsored by Sen. Maria Cantwell, designating a single ADHD awareness day to combat stigma and improve access to mental health services. The ADHD Awareness Coalition (ADDA, CHADD, ACO) later expanded it to the full month of October.

View Resolutionvia govinfo.gov
INTRO

Introduction

October is National ADHD Awareness Month, and it's a great time to spread awareness about this disorder. First described in 1902 by British pediatrician Sir George Still, ADHD affects approximately 6.4 million children in the United States alone. While it can cause significant difficulty in school and social settings, with proper support and understanding from family, friends, teachers, and medical professionals, individuals with ADHD can lead healthy and successful lives. Let's use this month to learn more about the disorder and help create a more inclusive environment for those living with ADHD!

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TIMELINE

​National ADHD Awareness Month Timeline

First Description of ADHD

British pediatrician Sir George Still was the first one to describe what is now recognized as ADHD, terming it “defect of moral control”.

Use of Stimulants

Doctor Charles Bradley discovers that stimulants have a calming effect on children with hyperactivity, a key symptom of ADHD.

ADHD Official Diagnosis

ADHD officially enters the American Psychiatric Association’s (APA) Diagnostic and Statistical Manual (DSM), legitimizing it as a diagnosis.

Redefinition of ADHD

ADHD was redefined in DSM-III-R to emphasize both attention problems and hyperactive-impulsive behavior.

Update to the DSM

ADHD definitions and criteria received updates in the DSM-IV-TR where it was detailed into three subtypes: inattentive, hyperactive-impulsive, and combined.

National ADHD Awareness Month

The US Senate officially declared September 7th as National ADHD Awareness Day. It was later moved to the entire month of October.

GET INVOLVED

How to Celebrate ​National ADHD Awareness Month

EDITOR'S PICK

Educate yourself

Take the time to learn more about ADHD. Read books, articles and watch documentaries to learn more about the disorder and how to support those who are affected.

HELP

Help raise awareness

Wear green on October 9th, which is National ADHD Awareness Day, to show your support for those living with ADHD. Share posts on social media about ADHD and use the hashtag #ADHDAwareness.

ORGANIZE

Organize an event

Organize an event in your local community to spread awareness of ADHD and its effects. Invite a speaker who has experience with the disorder or host a panel discussion.

VOLUNTEER

Volunteer

Volunteer at an organization that supports individuals with ADHD. This could include volunteer tutoring or mentoring services.

REACH

Reach out

Reach out to someone you know who has ADHD and offer words of encouragement and support. Let them know that you are there for them.

WHY THIS DAY MATTERS

Why ​National ADHD Awareness Month is Important

Provides Resources

During National ADHD Awareness Month, organizations and individuals come together offer support and guidance. They provide resources such as information on treatments, tips for managing the disorder, and mental health services so those affected by ADHD can get the help they need.

Raises Awareness

By raising awareness during ADHD Awareness Month, educators, medical professionals and members of the community become more knowledgeable about this disorder so they can better recognize early signs and symptoms. This can lead to earlier diagnosis which, in turn, can enable those affected to receive appropriate treatment sooner.

Promotes Acceptance

It's important for people to understand that ADHD is a real disorder that affects people in different ways. By promoting acceptance and understanding of the disorder during National ADHD Awareness Month, it can help to reduce the stigma associated with it and encourage those affected to seek help without fear of judgement or alienation.

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