give me a home where the humanoids roam

I just read a story about a boy who "suffers" from ADHD. The symptoms mentioned were an inability to concentrate, impulsivity and increased motor activity. Ummm....this is a disease? The boy's mother said that if he saw a leaf fall, he would want to chase it. Whoa. So, a child wanting to chase a leaf has a disease with a name, but a child who wants to sit in front of some sort of screen all the time is....normal? Does anyone think there is a possibility of someone making up diseases in order to sell drugs?