Can brain structure and function defects cause ADHD? 

The question of whether brain defects cause ADHD is central to understanding the neurobiological roots of the condition. Research has shown that brain defects causing ADHD can play a significant role in the development of ADHD symptoms, including hyperactivity, impulsivity, and difficulty focusing. These ADHD neurobiological risks are important factors that contribute to the development of the disorder and its associated challenges. In particular, hyperactivity causes ADHD symptoms to be particularly disruptive, affecting daily activities and social interactions. 

The prefrontal cortex, responsible for decision-making, attention regulation, and impulse control, is often underactive or develops more slowly in people with ADHD. The basal ganglia, which is involved in motor control and emotional regulation, can also be affected. These brain defects causing ADHD result in challenges with focus, hyperactivity, and impulsivity. The structural and functional differences in these areas explain how hyperactivity causes ADHD behaviours, making it harder to regulate activity levels and control emotional responses. 

Common Symptoms of ADHD 

Here are some key symptoms linked to brain defects causing ADHD: 

Difficulty focusing and completing tasks

People with ADHD may find it hard to maintain focus, particularly on tasks that require sustained attention. This is often due to underactivity in the prefrontal cortex.  

Impulsivity and hyperactivity

Symptoms such as fidgeting or impulsive speech are linked to irregularities in the basal ganglia.  

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.