Conclusion
The finding of cobblestone esophagus should prompt physician to investigate for an underlying etiology. In addition to performing endoscopy and biopsies to exclude common etiologies, this case shows us the importance of taking a comprehensive drug history. Patients with drug induced esophagitis may be asymptomatic initially. It is an easily reversible etiology that should be routinely considered for prompt intervention against irreversible damage to the upper gastrointestinal tract.