What Brain Imaging Findings Differentiate ADHD Subtypes? 

ADHD subtypes imaging plays a critical role in differentiating the distinct presentations of Attention Deficit Hyperactivity Disorder (ADHD). Brain imaging techniques, including fMRI and structural MRI, have provided valuable insights into how ADHD affects the brain in different ways depending on the subtype, inattentive type, hyperactive compulsive, and combined presentation. 

For those with inattentive type ADHD, brain imaging often shows underactivity in areas responsible for attention and working memory, such as the prefrontal cortex and parietal lobes. These regions are crucial for focus, organisation, and memory, and imaging highlights a need for treatment targeting these areas. In contrast, individuals with hyperactive compulsive ADHD tend to show overactivity in the basal ganglia and frontal cortex, regions responsible for impulse control and motor regulation. This might explain the more physical and impulsive behaviours seen in this group. 

For those with combined presentation ADHD, brain imaging typically reveals both underactivity in the attention-related regions (like the prefrontal cortex) and overactivity in areas governing impulsivity (such as the basal ganglia). This mixed pattern helps explain the diverse symptoms of both inattention and hyperactivity in these individuals. 

How Imaging Helps in Treatment 

Inattentive Type ADHD 

This subtype often presents with focus and memory difficulties. Medication like stimulants or CBT can target the underactivity in the prefrontal cortex, helping improve cognitive focus and organisation. 

Hyperactive Compulsive Type ADHD 

For this subtype, stimulants can help manage the overactivity seen in brain regions responsible for impulse control, improving behavioural regulation. 

Brain imaging enables more personalised treatments by identifying which areas of the brain require support, ensuring that therapy addresses the root causes of ADHD symptoms. 

Visit providers like ADHD Certify for personal consultations tailored to your ADHD care and support needs. 

For a deeper dive into the science, diagnosis, and full treatment landscape, read our complete guide to ADHD subtypes imaging.