https://www.health.com/peptic-ulcer-disease-8606848
Peptic ulcer disease occurs when stomach acid erodes the stomach lining and causes ulcers to develop. Abdominal pain and nausea are common symptoms.
peptic ulcer diseasesymptomscausestreatment
https://www.news-medical.net/health/Peptic-Ulcer-Symptoms.aspx
Peptic ulcers are sores within the lining of the stomach, upper region of the small intestine (duodenum), or sometimes the esophagus.
peptic ulcer symptoms