Validation of a Mental Health Scale for Young People With Chronic Stomach Symptoms

Inclusion Criteria: * Aged 12-17 years * Able to read and write fluently in English * Meet the Rome IV criteria and/or have a self-reported previous clinical diagnosis for at least one of the following childhood gastroduodenal DGBIs: gastroparesis, cyclic vomiting syndrome, functional nausea, functional vomiting, rumination syndrome, aerophagia, or functional dyspepsia Exclusion Criteria: * Patients with self-induced vomiting * Patients with an eating disorder