Duodenal ulcer 0.8cm represents the area of duodenal ulcer, this situation if you can get active and effective treatment, generally not serious; if untreated, with the aggravation of the condition, the ulcer deepens, causing complications such as perforation, hemorrhage, at this time more serious. Duodenal ulcer refers to duodenal pepsin, high gastric acid invasion, digestion of its own mucosa, the formation of a localized inflammatory defect, and its typical symptom is epigastric pain during fasting. Duodenal ulcer 0.8cm can be cured by using cimetidine, omeprazole, lansoprazole, magnesium aluminum carbonate and so on. Duodenal ulcer 0.8cm if not timely and active treatment, with the aggravation of the condition, can cause serious complications, such as vomiting blood, intestinal perforation or even gastrointestinal hemorrhage, but also systemic peritoneal inflammatory infection may occur, causing infectious shock. This is a serious condition, and in addition to the medication mentioned above, a series of measures such as placing a gastric tube, gastroscopy, and surgical treatment are needed to control the condition. Duodenal ulcers should be treated in a timely manner, with early diagnosis and treatment to prevent the condition from progressing to a serious state.