Three-year follow-up at age 10 of children with minor neurodevelopmental disorders. I: Behavioural problems.

Sixty-one children selected from a total population study of six-year-old children in Gothenburg and diagnosed as suffering from minimal brain dysfunction (MBD), motor perception dysfunction (MPD) or attention deficit disorder (ADD), and 51 normal control children were followed up at age 10 for behavioural problems. According to teachers', parents' and self-rating questionnaires, the index children, especially those with MBD, showed extremely high rates of severe behavioural/experiential problems at follow-up. None had been treated with stimulants or other drugs directed at alleviating the symptoms of the neurodevelopmental disorder. It is argued that the high rates of disturbances according to the questionnaire ratings are a true reflection of the psychiatric ill-health in these children.