Research has found that the brains of people with ADHD are smaller in certain areas -- especially in the frontal lobe -- affecting impulse control, concentration, and inhibition. Brain development ...

Adults with ADHD show changes such as higher iron accumulation in the brain — similar to early-stage dementia — which could ...

While we don't know exactly what causes ADHD, researchers say people with the condition have differences in brain structure, function, and chemistry compared to those without it. In people with ...

The NIH study used thousands of brain scans of children with ADHD traits from six datasets. Outside experts said this larger sample size helps understand how brains work in people with ADHD ...