Attention Deficit Hyperactivity Disorder (ADHD) is the most commonly diagnosed childhood psychiatric condition. It is generally agreed that 2-5% of the school age population is affected by ADHD, a condition characterized by excessive hyperactivity, inattention and impulsivity. Children with ADHD, and their parents, have it tough. ADHD is not curable but it is manageable. Behavioural techniques can work wonders to alleviate symptoms and enable children with ADHD and their families to have happy, fulfilling and productive lives. Calm your hyperactive child gives parents the low-down on how they.