The document summarizes information about ADHD, including its history, diagnosis rates, and common treatments and controversies. It was first described in 1798 as mental restlessness. The NHS defines it as difficulty maintaining attention, impulse control and hyperactivity. In the US, 9% of school-aged children are diagnosed and medicated, compared to less than 0.5% in France. Common medications are methylphenidate (Ritalin) and dexamphetamine, which are psycho stimulants similar to cocaine and speed. Alternative therapies include physical activity to improve neural networks, attention, and reduce anxiety.