Rome IV Criteria For Functional Abdominal Pain Disorders

Core Diagnostic Principles

Diagnosis requires symptoms unexplained by alternative medical conditions following appropriate medical evaluation.
Prior criteria mandated absolute absence of inflammatory, anatomic, metabolic, or neoplastic processes.
Updated criteria reduce requirement for intensive, invasive exclusionary testing.
Pathologies classified under overarching category of disorders of gut-brain interaction.

Criteria fulfilled for minimum 2 months prior to diagnosis.
Abdominal pain occurs minimum 4 days per month.
Pain associates with minimum one specific defecation characteristic.
Defecation characteristics include relation to defecation, altered stool frequency, altered stool form or appearance.
Pain persists despite resolution of concurrent constipation.

Criteria fulfilled for minimum 2 months prior to diagnosis.
Bothersome symptoms occur minimum 4 days per month.
Core symptoms include postprandial fullness, early satiation, epigastric pain, or epigastric burning.
Pain lacks association with defecation.
Subdivided into postprandial distress syndrome and epigastric pain syndrome.

Criteria fulfilled for minimum 6 months prior to diagnosis.
Minimum two paroxysmal episodes of intense, acute periumbilical, midline, or diffuse pain.
Pain duration strictly exceeds 1 hour.
Episodes separated by weeks to months.
Pain causes profound incapacitation, interfering with normal activities.
Exhibits stereotypical pattern in individual patient.
Pain associates with minimum two secondary features.
Secondary features include anorexia, nausea, vomiting, headache, photophobia, pallor.

Symptoms persist for 2 to 6 months.
Pain occurs minimum 4 times per month.
Features episodic or continuous abdominal pain.
Pain lacks association with physiologic events including eating or menses.
Exhibits insufficient criteria for irritable bowel syndrome, functional dyspepsia, or abdominal migraine.

Disorder Category	Frequency Requirement	Minimum Duration	Defining Clinical Features
Irritable bowel syndrome	$\geq$ 4 days/month	2 months	Pain related to defecation, altered stool frequency, or altered stool form.
Functional dyspepsia	$\geq$ 4 days/month	2 months	Postprandial fullness, early satiation, or epigastric pain/burning.
Abdominal migraine	$\geq$ 2 discrete episodes	6 months	Intense paroxysmal periumbilical/midline pain lasting $\geq$ 1 hour; associated vasomotor/somatic signs.
Functional abdominal pain not otherwise specified	$\geq$ 4 times/month	2-6 months	Episodic/continuous pain lacking criteria for other specific functional disorders.