Low-grade duodenal eosinophilia is associated with cagA in Helicobacter pylori related dyspepsia.

Functional dyspepsia (FD) is a multifactorial disorder. Helicobacter pylori (H. pylori) related dyspepsia (HpD) may be considered a separate entity. Duodenal eosinophilia is a potential pathogenic mechanism in FD. However, the impact of duodenal eosinophilia and H. pylori virulence genes in HpD was not explored.