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Is ADHD More Often Overdiagnosed Than Underdiagnosed? 

Posted
Updated
ByMy Patient Advice
Author: Avery Lombardi, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Is ADHD overdiagnosed more often than it’s underdiagnosed? It’s a hot topic and while some worry about ADHD overdiagnosis, particularly in children, the truth is less clear-cut. Both overdiagnosis and underdiagnosis happen, and they often depend on who’s being assessed and how. 

In school-aged children, particularly boys, ADHD diagnosis rates have surged. Some see this as a sign of ADHD overdiagnosis or even ADHD misdiagnosis driven by behavioural expectations. On the flip side, many adults especially women and minority groups are often overlooked. This leads to ADHD underdiagnosis, with long-term consequences for mental health, relationships, and employment. 

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Signs of ADHD That Are Often Missed 

ADHD symptoms can show up in subtle ways especially in adults which makes them easy to misread or dismiss. Here are a few that commonly fly under the radar: 

Chronic distractibility  

This isn’t just daydreaming. It’s frequently losing track of time, jumping between tasks, or mentally “checking out” in meetings and conversations. 

Emotional dysregulation  

People with ADHD often react strongly to everyday stress. What seems like overreacting may actually be a neurological sensitivity to emotional triggers. 

Executive dysfunction 

Forgetting deadlines or struggling to start tasks isn’t always procrastination it’s often a core ADHD challenge tied to brain function. 

In conclusion, understanding the balance between ADHD overdiagnosis and underdiagnosis is key to ensuring people get the support they genuinely need.  

Visit providers like ADHD Certify for personal consultations and expert guidance tailored to your unique situation. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to Overdiagnosis vs. Underdiagnosis in ADHD.

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Avery Lombardi, MSc
Author

Avery Lombardi is a clinical psychologist with a Master’s in Clinical Psychology and a Bachelor’s in Psychology. She has professional experience in psychological assessment, evidence-based therapy, and research, working with both child and adult populations. Avery has provided clinical services in hospital, educational, and community settings, delivering interventions such as CBT, DBT, and tailored treatment plans for conditions including anxiety, depression, and developmental disorders. She has also contributed to research on self-stigma, self-esteem, and medication adherence in psychotic patients, and has created educational content on ADHD, treatment options, and daily coping strategies.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the author's privacy. 

Dr. Rebecca Fernandez, MBBS
Reviewer

Dr. Rebecca Fernandez is a UK-trained physician with an MBBS and experience in general surgery, cardiology, internal medicine, gynecology, intensive care, and emergency medicine. She has managed critically ill patients, stabilised acute trauma cases, and provided comprehensive inpatient and outpatient care. In psychiatry, Dr. Fernandez has worked with psychotic, mood, anxiety, and substance use disorders, applying evidence-based approaches such as CBT, ACT, and mindfulness-based therapies. Her skills span patient assessment, treatment planning, and the integration of digital health solutions to support mental well-being.

All qualifications and professional experience stated above are authentic and verified by our editorial team. However, pseudonym and image likeness are used to protect the reviewer's privacy. 

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