Calculators & Tools

Rome IV — Functional Abdominal Pain (NOS)

Children/adolescents: symptoms at least 4 times per month for ≥2 months.

1 What is the Rome IV — Functional Abdominal Pain (NOS)?

The Rome IV — Functional Abdominal Pain (NOS) is a GI & Liver scoring tool used in paediatric practice. Children/adolescents: symptoms at least 4 times per month for ≥2 months. It scores 3 criteria and interprets the total across 2 bands, so the number always arrives with the severity it implies rather than on its own. In PediAid each criterion is shown as a labelled option with the weight it carries, so the total can be checked rather than taken on trust.

2 When to use it

  • Grading severity at the bedside in GI & Liver
  • Recording an objective severity band in the case notes
  • Deciding when a total crosses the threshold for escalation
  • Re-scoring to track whether a child is improving or deteriorating
  • Checking the exact criteria of a score used infrequently

3 Formula & method

The score sums 3 criteria: Episodic or continuous abdominal pain that does not occur solely during physiological events (eating, menses); Insufficient criteria for IBS, functional dyspepsia or abdominal migraine; Not fully explained by another medical condition after appropriate evaluation. Totals are then banded: any score - Criteria not met: all three criteria are required. If IBS, dyspepsia or abdominal-migraine criteria are met, use that diagnosis instead; 3 criteria or more - Criteria met: rome IV functional abdominal pain - not otherwise specified. Positive diagnosis; explain the gut-brain mechanism, avoid repeated investigation, and consider CBT/hypnotherapy.
  • Red flags requiring investigation: weight loss, GI bleeding, persistent vomiting, nocturnal pain waking the child, fever, arthritis, family history of IBD.
  • Source: Hyams JS et al. Rome IV - Functional disorders: children and adolescents. Gastroenterology 2016;150:1456-68.

4 Frequently asked questions

How many criteria does the Rome IV — Functional Abdominal Pain (NOS) use?

3. They are Episodic or continuous abdominal pain that does not occur solely during physiological events (eating, menses); Insufficient criteria for IBS, functional dyspepsia or abdominal migraine; Not fully explained by another medical condition after appropriate evaluation.

What do the bands of the Rome IV — Functional Abdominal Pain (NOS) mean?

The total is interpreted as: any score - Criteria not met: all three criteria are required. If IBS, dyspepsia or abdominal-migraine criteria are met, use that diagnosis instead; 3 criteria or more - Criteria met: rome IV functional abdominal pain - not otherwise specified. Positive diagnosis; explain the gut-brain mechanism, avoid repeated investigation, and consider CBT/hypnotherapy.

Does the score replace clinical judgement?

No. It is a structured way to record and communicate severity. A clinician concerned about a child should act on that concern regardless of the total.

Where does this score come from?

Red flags requiring investigation: weight loss, GI bleeding, persistent vomiting, nocturnal pain waking the child, fever, arthritis, family history of IBD.

Does it work offline?

Yes. Score definitions are bundled with the PediAid app, so the score computes without a connection.

For qualified clinicians. This page and the PediAid app are a clinical aid only. Calculations and reference data must be verified against the patient's clinical context, the source guideline and your local protocols before any treatment decision is made.