I know a child who is ten years old and faces a lot of problem in focussing his attention on a particular thing. He keeps on moving from one place to another and interrupts a lot when he is not a part of the conversation. Even while studying he keeps on moving on his chair or keeps on fidgeting with the stuff kept on the table. He gets irritated when things don't work the way he wants them to work. He is over competitive even with people who are not his age. However, he has a high IQ and faces no such problem with his school and is a bright student. His parents are a bit tensed about his hyperactive nature. Are these the symptoms of ADHD? If yes, can his condition improve?