Rome IV Child Functional Nausea and Vomiting calculator

Clinical inputs

• Duration of the symptoms (months)Accepted range: 0 to 36
• Bothersome nausea is the predominant symptom
• Nausea episodes per week (episodes/week)Accepted range: 0 to 70
• Nausea is generally not related to meals
• Nausea is not consistently tied to vomiting
• Nausea is not fully explained by another condition
• Vomiting episodes per week (episodes/week)Accepted range: 0 to 40
• No self-induced vomiting, eating disorder, or rumination
• Vomiting is not fully explained by another condition

Primary source

Hyams JS, Di Lorenzo C, Saps M, et al. Childhood functional gastrointestinal disorders: child/adolescent. Gastroenterology. DOI: 10.1053/j.gastro.2016.02.015. PMID: 27144632. Functional nausea (H1b1) requires bothersome nausea as the predominant symptom, at least two episodes per week rather than two days per week, generally not related to meals, not consistently associated with vomiting, and not fully explained by another condition, fulfilled for the last 2 months. Two episodes on the same day meet the weekly count. Nausea that is generally related to meals does not meet H1b1. Functional vomiting (H1b2) remains a separate path: on average one or more vomiting episodes per week, absence of self-induced vomiting or an eating disorder or rumination, symptoms not fully explained by another condition, and criteria for at least 2 months. The category is met when either complete set is met. (2016)