what is the cause of adhd?
ADHD and the brain. ADHD isn't entirely caused by genetic factors. Scientific studies have shown that in people with ADHD some important parts of the brain are developing more slowly and communicating less well. One particular part of the brain that has been associated with ADHD is the prefrontal cortex. The prefrontal cortex has important connections with other parts of the brain and is the area of the brain that's believed to control 'executive functions'.