What is the most common cause of peptic ulcer disease (PUD)?

Updated: Apr 26, 2021
  • Author: BS Anand, MD; Chief Editor: Philip O Katz, MD, FACP, FACG  more...
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H pylori infection and nonsteroidal anti-inflammatory drug (NSAID) use account for most cases of peptic ulcer disease. The rate of H pylori infection for duodenal ulcers in the United States is less than 75% for patients who do not use NSAIDs. Excluding patients who used NSAIDs, 61% of duodenal ulcers and 63% of gastric ulcers were positive for H pylori in one study. These rates were lower in whites than in nonwhites. Prevalence of H pylori infection in complicated ulcers (ie, bleeding, perforation) is significantly lower than that found in uncomplicated ulcer disease.

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