The optimal treatment regime for paediatric pain patients has been suggested to be cognitive behavioural approach integrated with physical therapy The aim of this project is to develop and evaluate in a randomized controlled trial a treatment program with a behavioural medicine approach (suitable to use in primary care or school based health care context) compared with standard treatment for adolescents with persistent pain problems. The aim is also to compare short and long-term costs for patients and for the health care system related to the two interventions, in order to determine strategies for future cost-effective care of children and adolescents experiencing recurrent pain.