helicobacter pylori symptoms
Infection with Helicobacter pylori (H. pylori) is the cause of most stomach and duodenal ulcers. H. pylori also causes some cases of non-ulcer dyspepsia. Infection with H. pylori can be confirmed by a test done on a sample of stools (faeces), by a breath test, by a blood test, or from a biopsy sample taken during a gastroscopy (endoscopy).