Inflammation of the duodenum, the first part of the small intestine, which can cause pain and digestive problems.
From duodenum plus -itis (from Greek itis, meaning 'inflammation'). The suffix -itis is used across medicine to indicate inflammatory conditions affecting specific body parts or organs.
Duodenitis is actually quite common but often goes undiagnosed because people assume they have general stomach issues—many cases are triggered by H. pylori bacteria or peptic ulcer disease.
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