One day a little patient with his mom came to a doctor's appointment.
The boy was hyperactive, he never stopped moving, couldn't sit still, was chatting all the time, his attention was leaping from one object to another… and his mom was always screaming: "Calm down! Sit down! Shut up! How tired I am!"
Apparently, such a situation was typical in their life. Mom was very annoyed by her son's behavior. The boy felt that he wasn't like the rest and it drove him into depression and his behavior became the worst.
So, what happened to him?
This boy and 120mln such children around the world have attention-deficit/hyperactivity disorder (ADHD).