True statement about GERD –
**Core Concept**
Gastroesophageal reflux disease (GERD) is a chronic condition characterized by the backflow of stomach acid into the esophagus, leading to symptoms such as heartburn and chest pain. The pathophysiology of GERD involves a failure of the lower esophageal sphincter (LES) to prevent gastric reflux.
**Why the Correct Answer is Right**
GERD is indeed a chronic condition, and its diagnosis is primarily based on symptoms, with endoscopy and pH monitoring used to confirm the diagnosis. The LES plays a crucial role in preventing gastric reflux, and its dysfunction is a key factor in the development of GERD. The symptoms of GERD are often exacerbated by factors such as obesity, smoking, and lying down after eating.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because GERD is not an acute condition, and its symptoms can persist for years if left untreated.
**Option B:** This option is incorrect because the primary symptom of GERD is not dysphagia (difficulty swallowing), but rather heartburn and chest pain.
**Option C:** This option is incorrect because GERD is not primarily caused by a hiatal hernia, although it can contribute to the development of GERD in some cases.
**Clinical Pearl / High-Yield Fact**
The "Million Dollar Meal" is a classic clinical correlation for GERD, referring to the fact that eating a large meal can trigger symptoms of GERD in susceptible individuals.
**Correct Answer:** D.