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Introduction: It occurs when bile flows upward from the duodenum into the stomach and oesophagus.
symptoms: Upper Abdominal pain, Nausea, Vomiting a greenish-yellow fluid, cough, weight loss.
current research: Reflux esophagitis develops as an immune-mediated injury, rether than a caustic injury so inorder to overcome many scientists are working on this issue.
Geographical Analysis: Death rate- 0.67%