The Causes of Attention Deficit Hyperactivity Disorder
There are many causes of attention deficit hyperactivity disorder. They are brain structure, brain chemicals, nerve pathways, genetic factors, dietary factors, and environmental factors.
Brain Structure
Studies using modern imaging methods show there is a variation in the size of some parts of the brain in kids with ADHD when related to kids who do not have ADHD. The regions showing difference are the caudate nucleus and globus pallidus, the prefrontal cortex, and the cerebellum.

