What Brain Structure and Function Changes Are Related to ADHD-Related Behavioural Issues?

PostedAugust 19, 2025

UpdatedSeptember 4, 2025

ByMy Patient Advice

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

ADHD MRI research has revealed that brain structure and function abnormalities are closely linked to behavioural issues in individuals with ADHD. These brain changes typically occur in areas responsible for attention, impulse control, and emotional regulation, such as the prefrontal cortex and basal ganglia. Structural and functional disruptions in these regions can result in ADHD cognitive issues and ADHD behaviour commonly observed in children and adults with the condition. These disruptions in neurodevelopment can affect how the brain processes information and responds to stimuli, which contributes to behavioural challenges.

The prefrontal cortex is essential for decision-making, attention, and impulse control. When this area is underdeveloped or impaired, it can lead to difficulties with regulating behaviour and emotions. Brain scans ADHD frequently show reduced activity in this region, which contributes to impulsivity, hyperactivity, and trouble focusing. Additionally, abnormalities in the basal ganglia, which are involved in motor control and reward processing, can intensify impulsive behaviour and mood swings in individuals with ADHD.

Common Symptoms of ADHD-Related Behavioural Issues

The brain structure and function changes seen in ADHD MRI research contribute to a range of behavioural symptoms. These include:

Impulsivity

Children and adults with ADHD may act without thinking, often leading to disruptive behaviour in social or academic settings.

Hyperactivity

Excessive movement, restlessness, and an inability to sit still are common signs of ADHD, resulting from imbalances in brain regions that regulate motor activity.

Emotional Dysregulation

Difficulty managing emotions and reacting disproportionately to situations can often be traced back to disruptions in the brain areas involved in emotional regulation.

Visit providers like ADHD Certify for personal consultations and expert advice tailored to your needs.

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.