Esophagitis is an inflammation of the lower part of the esophagus. The esophagus is the tube that connects the throat and stomach.
Esophagitis produces heartburn and pain in the area below the breastbone or in the upper stomach.
Reflux esophagitis is caused by gastroesophageal reflux, which is when the acid contents of the stomach flow back, or reflux, into your esophagus, causing heartburn. When gastroesophageal reflux occurs often, acidic juices backed up into the esophagus can inflame it. Symptoms can appear when you lie down after eating and are relieved when you sit upright. Heartburn, the most common symptom, usually occurs 30 to 60 minutes after you eat and may be severe. The pain may spread to your neck, jaw, arms, and back.