What brain structure and function abnormalities are seen in people with ADHD?

PostedAugust 18, 2025

UpdatedSeptember 4, 2025

ByMy Patient Advice

Author: Harriet Winslow, BSc | Reviewed by: Dr. Rebecca Fernandez, MBBS

Understanding ADHD brain abnormalities is key to recognising how the condition develops and why its symptoms persist. Studies of brain imaging have consistently shown that individuals with ADHD often experience differences in the size, activity, and connectivity of certain brain regions. These ADHD brain abnormalities help explain the challenges in focus, emotional control, and behaviour that many people with ADHD face.

The condition is classed among neurodevelopmental disorders, meaning it affects how the brain develops from early life. Common structural and functional differences appear in areas like the prefrontal cortex, basal ganglia, and cerebellum. The prefrontal cortex, which governs decision-making and attention, may be underactive. The basal ganglia, which influence movement and motivation, often function differently in people with ADHD. Meanwhile, the cerebellum plays a role in timing and emotional control and may also show delayed development or reduced size. These patterns, common in neurodevelopmental disorders, provide essential insight into how ADHD symptoms arise and evolve.

Common Symptoms

Here are symptoms typically linked to these ADHD brain abnormalities:

Struggling to stay focused

Tasks may be abandoned, or attention may shift quickly. This is commonly tied to an underactive prefrontal cortex.

Impulsivity and difficulty regulating behaviour

Quick decisions, emotional outbursts, or physical restlessness may result from disrupted basal ganglia activity.

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 Brain structure and Function.

Harriet Winslow, BSc

Author

Harriet Winslow is a clinical psychologist with a Bachelor’s in Clinical Psychology and extensive experience in behaviour therapy and developmental disorders. She has worked with children and adolescents with ADHD, autism spectrum disorder (ASD), learning disabilities, and behavioural challenges, providing individual and group therapy using evidence-based approaches such as CBT and DBT. Dr. Winslow has developed and implemented personalised treatment plans, conducted formal and informal assessments, and delivered crisis intervention for clients in need of urgent mental health care. Her expertise spans assessment, treatment planning, and behavioural intervention for both neurodevelopmental and mental health conditions.

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.