Most people with H. pylori infection will never have any signs or symptoms. It's not clear why this is, but scientists believe some people may be born with more resistance to the harmful effects of H. pylori.

When signs or symptoms do occur with H. pylori infection, they may include:

  • An ache or burning pain in your abdomen
  • Nausea
  • Vomiting
  • Frequent burping
  • Bloating
  • Weight loss

When to see a doctor

Make an appointment with your doctor if you notice any persistent signs and symptoms that worry you. Seek immediate medical help if you experience:

  • Severe or persistent abdominal pain
  • Difficulty swallowing
  • Bloody or black tarry stools
  • Bloody or black vomit or vomit that looks like coffee grounds
May. 24, 2011