ADHD is not caused by bad parenting, too much sugar, or too many video games. It is a brain-based, biological disorder. Brain imaging studies and other research show many differences in the brains of individuals with ADHD.
There’s still a lot of work to do on the genetic aspect of ADHD. The discovery of genes that contribute to ADHD could make diagnosing the condition easier. It might also make it possible to find better treatments for people with varying symptoms of ADHD.ADHD brains exhibit structural and functional differences.Scans and other neuro-imaging research
have shown that the brains of children with ADHD mature more slowly than do those of children without the disorder. In addition, recent studies with fMRI imaging show variations in areas of the brain that control many ADHD symptoms. In children with ADHD, several brain regions and structures tend to be smaller by roughly 5%.
While this average difference is observed consistently, it is too small to be useful in making the diagnosis of ADHD in a particular individual.These findings may one day lead to using brain imaging to diagnose ADHD, however this remains a rare and somewhat controversial practice today.
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