Patients with duodenal ulcers can experience nausea, but not everyone has nausea. Most people mainly experience regular epigastric pain, such as paroxysmal distension under the glabella or in the left upper abdomen. The pain is usually closely related to diet, and is more pronounced when hungry and relieved after eating. It may be accompanied by acid reflux, belching, early satiety, nausea and vomiting. If the presence of duodenal ulcer has been confirmed by electrogastroscopy, the patient needs to be treated with regular medication by a specialist. If peptic ulcer is only suspected, you need to go to the hospital and cooperate with the doctor to check the electronic gastroscopy to help clarify the diagnosis. Peptic ulcer is a serious disease and may lead to bleeding, perforation and other complications, so patients should go to the hospital early and cooperate with the doctor for examination and treatment.