Duodenal Ulcer: Causes & Symptoms

by Meenakshi Nagdeve last updated -

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According to research, duodenal ulcer is an affliction that affects nearly 5,000,000 Americans due to an improper functioning of the digestive system and poor eating habits.

What is Duodenal Ulcer?

A duodenal ulcer is a crater in the lining of the small intestine (duodenum). It is usually caused by an infection with Helicobacter pylori bacteria.

Note: Many people usually categorize duodenal ulcers as gastric ulcers, but they are actually two different things. The ulcers which occur in the stomach are called gastric ulcers, while the ones located in the duodenum are called duodenal ulcers. Both duodenal and gastric acids are classified as peptic ulcers.



The most common causes of duodenal ulcers are:

  • Bacterial infections
  • Heavy intake of spicy food
  • Anti-inflammatory drugs
  • Zollinger-Ellison syndrome
  • Extreme stress levels
  • Intake of alcohol


Duodenal ulcers are located in the duodenum and the symptoms can include:

  • Persistent pain in the abdomen
  • Erosion of the stomach and duodenal lining
  • Bloating
  • Nausea
  • Vomiting blood
  • Blood in stools
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