Phase 1) Focus groups with patients, parents and clinicians (n = 5-6 each) will inform about unmet pain care needs, and provide a starting point for co-designing the intervention.
Phase 2) Content creation and usability testing will be based on the results of Phase 1 and the theory-driven development will follow the latest available evidence and the World Health Organization guidelines on the management of chronic pain in children. The intervention will use validated psychological techniques (particularly Cognitive Behavioral Therapy and Acceptance and Commitment Therapy) focused on improving functioning by teaching pain coping skills, such as: relaxation, goal setting, sleep management, behavioral activation, self-management of negative thoughts and emotions, and communication skills.
Phase 3) Effectiveness and Implementation study. Participants (n = 195) will be adolescents 12-17 years old with chronic pain admitted into any of 6 large hospitals in Spain and one of their parents.