Carbohydrate-induced gastrointestinal symptoms: development and validation of a test-specific symptom questionnaire for an adult population, the adult Carbohydrate Perception Questionnaire.

Objectives: Carbohydrate intolerances may affect a majority of the worlds-population but there is no validated, test-specific assessment of carbohydrate-induced symptoms during breath tests. We aimed to develop and validate a questionnaire for evaluation and quantification of carbohydrate intolerance.

Methods: A visual analog scale-questionnaire with five complaints (pain, nausea, bloating, flatulence, and diarrhea) was designed.