What causes gastroesophageal reflux disease (GERD)?

Updated: May 23, 2019
  • Author: Marco G Patti, MD; Chief Editor: BS Anand, MD  more...
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Answer

Gastroesophageal reflux disease occurs when the amount of gastric juice that refluxes into the esophagus exceeds the normal limit, causing symptoms with or without associated esophageal mucosal injury (ie, esophagitis; see the image below).

Peptic esophagitis. Peptic esophagitis.

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