What are the differences between duodenal bulb inflammation and colitis?

The main differences between duodenal bulb inflammation and colitis are as follows: 1. **Location**: Duodenal bulb inflammation primarily occurs in the duodenal bulb, located below the stomach and slightly to the right of the navel; while colitis occurs in the lower part of the small intestine, specifically in the large intestine. 2. **Clinical manifestations**: Duodenal bulb inflammation commonly presents with upper abdominal pain and hunger-related pain, often accompanied by symptoms such as nausea, vomiting, and acid reflux; colitis mainly presents with abdominal pain, diarrhea, and mucopurulent bloody stools, with pain typically located in the lower abdomen. 3. **Etiology**: Duodenal bulb inflammation is often caused by irritation from substances such as gastric acid and bile or by Helicobacter pylori infection; colitis may be caused by various factors including bacterial, fungal, or viral infections. 4. **Treatment**: The treatment principles for the two conditions differ, and individualized treatment must be formulated based on specific causes and symptoms.