Recommended Clinical Definitions of Long-Lasting Intermittent or Constant Abdominal Pain in Children

Chronic abdominal painLong-lasting intermittent or constant abdominal pain that is functional or organic (disease-based)
Functional abdominal painAbdominal pain without demonstrable evidence of a pathologic condition, such as an anatomic, metabolic, infectious, inflammatory, or neoplastic disorder; functional abdominal pain may present with symptoms typical of functional dyspepsia, irritable bowel syndrome, abdominal migraine, or functional abdominal pain syndrome
Functional dyspepsiaFunctional abdominal pain or discomfort in the upper abdomen
Irritable bowel syndromeFunctional abdominal pain associated with alteration in bowel movements
Abdominal migraineFunctional abdominal pain with features of migraine (paroxysmal abdominal pain associated with anorexia, nausea, vomiting, or pallor as well as a maternal history of migraine headaches)
Functional abdominal pain syndromeFunctional abdominal pain without the characteristics of dyspepsia, irritable bowel syndrome, or abdominal migraine