Heart Burn -

The primary cause is gastroesophageal reflux (GER), where stomach contents regurgitate into the esophagus.

: Unlike the stomach, the esophagus lacks a protective lining against acid and pepsin. Chronic exposure damages the mucosa and submucosa, triggering pain through deep-seated sensory nerves. HEART BURN

: A condition where symptoms persist despite a normal endoscopy and even when acid suppression therapy fails. It is often linked to esophageal hypersensitivity , where the nerves in the esophagus are overly sensitive to even physiological (normal) levels of acid. Distinguishing Heartburn from Heart Attacks Heartburn or heart attack: When to worry - Mayo Clinic The primary cause is gastroesophageal reflux (GER), where