ADHD- attention deficit hyperactivity disorder is one of the most common disorders of childhood and adolescence. It is a cognitive and behavioral disorder characterized by hyperactivity, impulsivity and inattention. It affects 3-5 % of children, and the diagnosis is four times more common in boys than in girls. ADHD usually begins to occur between the third and fourth year of life, however, symptoms in some children can be spotted earlier. The behavior of children with ADHD significantly deviates from the behavior of their peers. These are children who can not sit quietly, they are restless, constantly in motion, they are difficult to concentrate, often beat other children and it is difficult for them to control their impulses. These characteristic most often lead children with ADHD to problems with the environment. It is often forgotten that hyperactive children have their good sides. Such children are full of new ideas, creative, love to explore and are flexible. However, disregarding the usual rules and the provisions of the society in some ways makes them unsuitable. To avoid a complete social isolation of a child it is necessary, based on specific symptoms, to detect the disorder and set up an appropriate diagnosis. ADHD symptoms must be present before seventh year of life and must last at least six months in two different environments. In diagnosing and treating of ADHD, a multidisciplinary team participates in co-operation with parents, educators and teachers. Ignoring the disorder as well as the lack of optimal treatment has devastating consequences for the child's development, academic success and forming in a healthy social being. By providing adequate assistance and taking care about the child's strong and weak sides, family, educators and experts can together ensure that a child with hyperactive disorder is being able to lead a happy and successful life.