Gastritis

Also called Stomach inflammation

Gastritis is when the lining of the stomach becomes inflamed. It can come on suddenly or last a long time. Common causes include an infection with Helicobacter pylori (H. pylori) bacteria, regular use of anti-inflammatory painkillers such as ibuprofen or aspirin, alcohol and stress.

Last updated Nov 9, 2026

What it is

Treatment depends on the cause. Medicines that reduce stomach acid are often used, and H. pylori is treated with antibiotics.

Untreated, gastritis can lead to stomach ulcers or bleeding.

Common signs

  • Indigestion or burning in the upper tummy
  • Feeling sick
  • Feeling full quickly after eating
  • Bloating

How it is usually diagnosed

  • Questions about symptoms and medicines
  • Tests for H. pylori (breath, stool or blood)
  • Endoscopy (gastroscopy), sometimes

Records worth keeping

Keeping these together makes each appointment easier, especially when you see a new doctor:

  • H. pylori test results
  • Endoscopy and biopsy reports
  • A list of medicines
  • Gastroenterology letters

Questions to ask your doctor

  • What is causing my gastritis?
  • Should I be tested for H. pylori?
  • Do I need to stop any of my medicines?

When to get help right away

Call 112 or go to the nearest emergency department if you have:

  • Vomiting blood or black, tarry poo: call 112

This page is general information. It is not a diagnosis and does not replace a doctor who knows your history. Medfold keeps your records organised; it does not interpret them.

Sources