Helicobacter pylori is a type of bacteria that is a major cause of stomach (gastric) and upper small intestine (duodenal) ulcers. Infection with H. pylori may also increase the risk of stomach cancer.
Most people don't have any symptoms. But sometimes an H. pylori infection causes an upset stomach or a stomach sore (ulcer). Symptoms of an ulcer include gnawing or burning pain in the belly that can last for hours. Taking antacids or eating helps relieve the pain, but the symptoms may come back.
Gastritis is inflammation or irritation of the stomach lining. It can be caused by some medicines (such as aspirin or other anti-inflammatory medicines), overuse of alcohol, stomach acid, or bacterial infection.
An infection with the bacteria Helicobacter pylori (H. pylori) can cause gastritis. H. pylori is also the bacteria that causes ulcers.
One way to test for H. pylori is to take a tissue sample from the stomach. The doctor uses a thin, flexible, lighted viewing instrument (endoscope) to look down your throat and into your stomach. Looking through the endoscope, your doctor may also see irritation or inflammation in the lining of your stomach. This irritation is gastritis. And a tissue sample will tell the doctor if the cause is H. pylori.
You can get rid of Helicobacter pylori bacteria by taking certain antibiotics that are specifically directed at this bacteria.
People who had a peptic ulcer and are infected with H. pylori need treatment to cure the infection. This will lower their risk of getting another peptic ulcer. Treatment with a combination of medicines works very well to cure an H. pylori infection. Sometimes H. pylori bacteria are resistant to certain antibiotics. This can keep the medicine from killing the bacteria.
Some people who take medicine to treat the H. pylori infection may need a follow-up test to make sure that the infection is cured.
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