Introduction What is this ADHD? . First lets look at the formal definition of ADHD. Below are couple of definitions from different websites. From add.org -> “ADHD is a highly genetic, brain-based syndrome that has to do with the regulation of a particular set of brain functions and related behaviors.” From Dr Hallowell (Top Doctor for ADHD)  -> “ADHD is a neurological condition that is usually genetically transmitted. It is characterized by distractibility,