Duodenal bulb inflammation is not an ulcer. It refers to chronic inflammation of the mucosa of the duodenum without erosion, hence it is not a duodenal ulcer. However, if patients with duodenal bulb inflammation do not receive proper treatment and fail to pay attention to their diet, among other factors, it may potentially develop into a duodenal ulcer. Once a duodenal ulcer occurs, it could lead to potential complications such as pyloric obstruction, gastrointestinal bleeding, and perforation of the duodenal bulb, etc. Therefore, it is crucial for patients with duodenal bulb inflammation to seek active treatment.