[The role of Helicobacter pylori in abdominal pain in children].

Helicobacter pylori (H. pylori) colonizes the human stomach, especially during childhood. H. pylori gastritis, in the absence of duodenal ulcer, does not appear to be associated with specific symptoms. After eradication of H. pylori infection, abdominal pain is improved only in children with duodenal ulcer. Children with H. pylori gastritis cannot be distinguished from uninfected children on the basis of initial symptoms. However, although not demonstrated, a relationship between H. pylori and recurrent abdominal pain might exist since some studies showed that H. pylori-infected children present more frequent pain related to meals or ulcer-like symptoms. These discrepancies could be explained by the fact that H. pylori is probably not a frequent cause of recurrent abdominal pain. The use of refined clinical characteristics of abdominal pain could be of help identifying a subgroup of patients with abdominal pain in whom H. pylori infection needs to be sought and treated. Recent pediatric consensus conferences recommend testing for H. pylori infection by endoscopy only those patients presenting symptoms suggestive of an organic origin.