Esophageal and reflux disorders encompass a broad range of conditions affecting swallowing, esophageal motility, and acid or non-acid reflux. Gastroesophageal Reflux Disease (GERD) remains one of the most prevalent digestive disorders worldwide, presenting with symptoms such as heartburn, regurgitation, chest pain, and extra-esophageal manifestations including cough and laryngitis. Advances in diagnostic tools—high-resolution manometry, impedance-pH monitoring, and endoscopic imaging—have significantly improved disease characterization. Beyond GERD, conditions such as eosinophilic esophagitis, Barrett’s esophagus, achalasia, and esophageal strictures pose diagnostic and therapeutic challenges. Current research focuses on personalized treatment strategies, including novel pharmacologic agents, endoscopic interventions, and minimally invasive surgical techniques. Understanding the pathophysiology of reflux, esophageal hypersensitivity, and mucosal defense mechanisms is critical for optimizing patient outcomes. This topic highlights emerging therapies, refined diagnostic algorithms, and multidisciplinary approaches to managing complex esophageal diseases.