Certain brain structures related to emotion and reward are smaller in people with the disorder, new research finds.
The largest-ever brain imaging study on attention deficit hyperactivity disorder has led scientists to say the condition should be considered a neurological disorder, not just a behavioral one.
The brain structures of children with ADHD differ in small but significant ways from those of normally developing children, according to the findings, which were published online in the journal Lancet Psychiatry on Feb. 15.