Medical Emergencies · single question
Which bacterium causes duodenal ulcers?
Show answer and explanation
Correct answer: A. pylori
- A. Correct. Helicobacter pylori is the principal cause of duodenal (and most gastric) peptic ulcers.
- B. E. coli is not a typical cause of peptic ulcer disease.
- C. S. pyogenes causes pharyngitis, skin infections, etc., not duodenal ulcers.
- D. C. difficile causes antibiotic-associated colitis, not duodenal ulcers.
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