Author: Avery Lombardi, MSc | Reviewed by: Dr. Rebecca Fernandez, MBBS
Yes, when it comes to ADHD underdiagnosis in boys vs girls, girls are disproportionately affected. While child ADHD is often identified in boys due to outward signs like hyperactivity and impulsive behaviour, girls tend to show more internalised symptoms such as inattention, anxiety, or perfectionism. These are less disruptive and therefore less likely to trigger a formal assessment.
The result? A persistent ADHD gender gap in diagnosis that leaves many girls unsupported, misunderstood, and struggling to meet expectations. Boys may be more frequently diagnosed, but that doesn’t mean they are overdiagnosed — it often means girls are being left behind.
Why the ADHD Prevalence Differences?
Several key reasons contribute to the ADHD prevalence differences between boys and girls:
Diagnostic bias
Clinical criteria have historically focused on hyperactivity, skewing detection rates toward boys.
Subtle presentation in girls
Girls with ADHD may internalise their symptoms, appearing anxious or distracted rather than disruptive.
Cultural conditioning
Girls are often praised for being quiet or well-behaved, which can mask difficulties until academic or emotional struggles emerge.
In conclusion, the impact of missed diagnoses is significant from lower academic achievement to increased risk of anxiety and depression. Bridging the ADHD gender gap starts with understanding how symptoms show in ADHD underdiagnosis in boys vs girls.
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.
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.
