Upper GI Endoscopy, also known as esophagogastroduodenoscopy (EGD), is a diagnostic procedure used to visualize the upper gastrointestinal (GI) tract, including the esophagus, stomach, and duodenum. A flexible endoscope equipped with a camera is inserted through the mouth to examine these areas for abnormalities such as ulcers, tumors, or inflammation. This procedure helps in diagnosing and managing conditions like GERD, peptic ulcers, and gastrointestinal bleeding. Patients should opt for Upper GI Endoscopy when experiencing persistent digestive issues, such as severe heartburn, unexplained nausea, or upper abdominal pain.