Internet-delivered Cognitive Behavior Therapy for Adolescents With Functional Gastrointestinal Disorders: a Pilot Study

Inclusion Criteria: * age between 13 and 17 years old. * a diagnosis of a functional gastrointestinal disorder by treating physician, e.g. IBS, FD or FAP. * adolescent and one parent should have easy access to the Internet, some computer experience and good Swedish language skills. Exclusion Criteria: * concurrent serious medical conditions or gastrointestinal symptoms likely caused by an organic disorder. * psychiatric diagnosis more urgent to treat than the abdominal pain. * on-going psychological treatment. * absence from school more than 20%. * on-going maltreatment, violence or severe parental psychiatric illness in the family. * pronounced language and learning difficulties depending on whether the youth was expected to benefit from the treatment or not.