In an analysis of data on children 4 to 18 years old from the Mediterranean-European Area Project, we found FGIDs to be more frequent in girls. Functional constipation, aerophagia, abdominal migraine, and IBS are the most common disorders. However, the prevalence of FGIDs varies significantly among countries.

The CDDUX questionnaire emerged as reliable for use in Spanish children with celiac disease. Overall, both children and parents felt the disease had no substantial negative impacts on patient HRQOL.