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1 Common symptoms include heartburn and painful swallowing.  If undiagnosed or untreated, esophagitis can cause problems with swallowing, ulcers, scarring of the esophagus, or Barrett's esophagus, which can be a precursor to esophageal cancer.
Heartburn, GERD, and esophagitis can have a complicated, intertwined relationship. Esophagitis simply means inflammation of the esophagus, says Stella Y. Chow, MD, director of gastroenterology at the Lahey Clinic North Shore in Burlington, Mass. Your esophagus is the tube that connects your throat to your stomach.When your esophagus gets irritated or swollen, it causes esophagitis symptoms.Heartburn, a common symptom of esophagitis, affects almost 40 percent of Americans at least twice a month. Eosinophilic esophagitis.  2 This is a rare type of allergic reaction that causes inflammation of the esophagus, says Chow. 3  Other causes. 4  These include irritation from excessive vomiting due to illness or bulimia, alcohol, caffeine, cigarette smoking, or heartburn-causing medications like aspirin or anti-inflammatories.