The Great Lie - ADD & ADHD

Is ADD & ADHD a real medical disorder? Or has it been made up to medicate kids who are not interested in maintaining the system in place?

There are many kids today being labelled with this disorder because they are not interested or do not want to pay attention in school. They "can't focus on things they find are boring or repetetive but can give full attention to things they are interested in"... doesn't matter, they are still ADD or ADHD! Let's medicate them! They aren't following our rules!