Pain in the abdomen is a common complaint in children. Frequently the cause of the pain cannot be determined, as investigation is usually uninformative.
Lust1 described abdominal pain, particularly the type localizing about the umbilicus ("navel colic"), as common among children. Moro2 also depicted recurrent navel colic. Both writers mentioned the difficulty of ascertaining the cause of the condition and the paucity of objective findings.
Food allergy as a cause of abdominal pain has been emphasized by several investigators (Bray,3 Rowe,4 Laroche and his co-workers,5 Duke,6 Andresen,7 Rackemann,8 Hollander,9 Alexander10 and Lintz11). Occasionally, in these studies it has been shown that abdominal pain of obscure origin followed the eating of certain foods, that the pain disappeared on withdrawal of these foods and that positive cutaneous reactions to extracts of these ingestants could be demonstrated. Such a triad fulfils in