Duodenal Ulcers Commonly Occur In Which Area

Duodenal ulcers most frequently develop in the duodenal bulb, which is located just below the pylorus, the gateway from the stomach to the small intestine. The stomach itself is divided into several parts, including the body, antrum, and pylorus. Following the duodenal bulb is the junction where the duodenum transitions into its descending portion.

Main Causes Of Duodenal Ulcers

The primary cause of duodenal ulcers is excessive gastric acid secretion combined with infection by Helicobacter pylori (H. pylori). This bacterium typically colonizes the gastric antrum, although in some cases it can also attach to the lining of the duodenum, triggering increased acid production.

How Acid Contributes To Ulcer Formation

The pH level of the stomach typically ranges from 1.5 to 3.5 due to the presence of hydrochloric acid, which aids in digestion. This acid passes through the pylorus into the duodenum, particularly accumulating in the duodenal bulb. As a result, this area is especially prone to ulcer development.

Symptoms And Complications

Common symptoms of a duodenal ulcer include abdominal pain, acid reflux, and heartburn. The pain often improves with eating or taking antacids, as these actions temporarily neutralize stomach acid. However, if left untreated, ulcers can lead to more severe complications such as bleeding, obstruction, or even perforation of the intestinal wall, which requires immediate medical attention.