Attention deficit/hyperactivity disorder is ubiquitous in the modern world. It does not represent anything new as a phenomenon in children's behavior and functioning and is still stigmatized by the environment both when it comes to the parent and when it comes to the child. This thesis deals with a child with attention deficit/hyperactivity disorder with special emphasis on the influence of the family in this sense. In more detail, the paper examines general questions about this disorder in children, the criteria for its diagnosis and the possibilities of its individualized treatment. In particular, the influence and role of the family in this sense and its influence on the social, emotional, intellectual and moral characteristics of children's development are highlighted. The importance of parent education is especially emphasized. Namely, it is possible for parents to avoid or reduce the level of stress and frustration through organized workshops, educations and lectures, where they will master skills and improve abilities that will be transferred to the child and thus improve their relationship, the child's opportunities, but also provide easier functioning in the environment.