26th April 2024

A 40-year-old man presents with a six-month history of heartburn and regurgitation, particularly after meals and when lying down at night.

A 40-year-old man presents with a six-month history of heartburn and regurgitation, particularly after meals and when lying down at night. He also reports a chronic cough and a sensation of a lump in his throat. He has tried over-the-counter antacids with minimal relief. His past medical history is unremarkable, and he is not on any regular medications. He denies dysphagia, weight loss, or gastrointestinal bleeding. On examination, his abdomen is soft and non-tender, and there are no abnormal findings.

Which is the most likely diagnosis?