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What are two differences between gastric and duodenal ulcers?
1. Gastric occurs in the stomach, and duodenal occurs in the duodenum.
2. Gastric is irritated by eating, and duodenal is irritated by hunger.
3. Gastric causes hematemesis (vomiting of blood), and duodenal causes melena (blood in the stool).
4. Gastric may cause weight loss, and duodenal may cause weight gain.
5. Gastric usually occurs when acid production is normal, and duodenal usually occurs when acid production is increased.