An “ulcer” is an open sore. The word “peptic” means that the cause of the problem is due to acid. Most of the time when a gastroenterologist is referring to an “ulcer” the doctor means a peptic ulcer.
The two most common types of peptic ulcer are called “gastric ulcers” and “duodenal ulcers”. These names refer to the location where the ulcer is found. Gastric ulcers are located in the stomach. Duodenal ulcers are found at the beginning of the small intestine (also called the small bowel) known as the duodenum. A person may have both gastric and duodenal ulcers at the same time.