Whether gastric ulcers and duodenal bulb ulcers are severe depends on the size of the ulcers and whether there are complications. If there are complications such as perforation and bleeding, it can be very serious. Severe cases may require surgical intervention and could potentially endanger the patient's life. Patients with gastric and duodenal bulb ulcers are likely caused by Helicobacter pylori infection, though it cannot be ruled out that some may be caused by ingestion of non-steroidal anti-inflammatory drugs or steroids. Treatment varies depending on the cause. For instance, if it is caused by Helicobacter pylori infection, standardized eradication of Helicobacter pylori is necessary, along with comprehensive treatment to suppress gastric acid secretion and protect the gastric mucosa.