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Complications of Untreated GERD

April 21, 2026Published date
April 21, 2026Last reviewed
Clinically reviewed by Physicians
Complications of Untreated GERD

Outline

Untreated GERD can lead to serious complications, including Barrett's esophagus and esophageal cancer. Learn what happens when acid reflux goes unmanaged.

Key Takeaways

  • Untreated GERD leads to progressive damage to the esophagus, resulting in erosive esophagitis, stricture of the esophagus, Barrett's esophagus, and esophageal adenocarcinoma from repeated damage from acid reflux
  • Stricture of the esophagus results in progressive difficulty swallowing from fibrosis, where repeated dilatation of the stricture, along with PPI therapy, is required to maintain a sufficient caliber of the esophagus for swallowing
  • Barrett's esophagus affects 5-15% of GERD patients who undergo endoscopy, as reported by the ACG (2022). Barrett's esophagus requires repeated endoscopy and management of any dysplasia to prevent cancer from occurring
  • Esophageal adenocarcinoma arises from Barrett's esophagus and has a poor prognosis if diagnosed in the advanced stages, with a 5-year survival rate of approximately 20%, as reported by the ACS (2023)
  • Complications of GERD, referred to as extra-esophageal GERD, result in LPR, dental erosion, worsening of asthma, and aspiration pneumonia from acid reaching the throat and lungs

Erosive Esophagitis?

The most common complication of untreated GERD is erosive esophagitis, which is caused by the erosion and ulceration of the esophagus due to the effects of acid reflux. Symptoms include increased heartburn, painful swallowing, blood in vomit or stool, and iron deficiency anemia caused by chronic bleeding in the esophagus. If the patient is not treated, erosive esophagitis leads to the development of strictures and Barrett's esophagus.

Esophageal Stricture?

Repeated cycles of acid-induced inflammation and healing cause fibrous scar tissue to replace the normal esophageal lining, narrowing the esophagus. Symptoms include:

  • Progressive difficulty swallowing, initially solids, then liquids
  • Food becomes stuck in the chest during swallowing
  • Regurgitation of undigested food
  • Unintentional weight loss from reduced food intake

Esophageal strictures require endoscopic dilation alongside intensive PPI therapy. Repeated dilation sessions are often necessary to maintain an adequate esophageal diameter.

Barrett's Esophagus?

Barrett's esophagus is one of the most serious GERD complications.The normal squamous lining of the esophagus is replaced by intestinal type cells, which is a reaction to chronic acid injury. Barrett's esophagus is not associated with symptoms different from those of underlying GERD but is important because of its potential to cause cancer.

According to the ACG (2022), Barrett's esophagus is found in approximately 5 to 15 percent of patients undergoing endoscopy for GERD symptoms. Risk factors include long-standing GERD (more than 5 years), male sex, age over 50, obesity, smoking, and family history of Barrett's esophagus.

Once diagnosed, Barrett's esophagus requires regular endoscopic surveillance:

  • No dysplasia: Endoscopy every 3 to 5 years
  • Low-grade dysplasia: Endoscopy every 6 to 12 months or endoscopic treatment
  • High-grade dysplasia: Endoscopic eradication therapy including radiofrequency ablation

Esophageal Adenocarcinoma?

Esophageal adenocarcinoma is the most serious and life-threatening GERD complication, developing from Barrett's esophagus through progressive dysplasia.The symptoms include difficulty in swallowing, significant weight loss, constant chest pain, and vomiting blood. According to the American Cancer Society (2023), the 5-year survival for advanced-stage esophageal cancer is about 20 percent. Early detection of the disease through Barrett surveillance can increase the chances of surgical cure.

What Are the Extraesophageal Complications of GERD?

Complications of untreated GERD include:

  • Laryngopharyngeal reflux (LPR): GERD that results in acid in the throat can cause:
  • Hoarseness
  • Clearing of the throat
  • Dry cough
  • Globus (a sensation of having something in the throat)
  • Dental erosion: Dental erosion from GERD is irreversible. The acid in GERD can cause erosion of the enamel of the teeth, which can cause:
  • Thin enamel
  • Sensitive teeth
  • Cavities
  • Worsening asthma: Acid microaspiration triggers bronchospasm and worsens asthma control
  • Recurrent aspiration pneumonia: Acid aspiration into the lungs causes recurrent pneumonia, particularly in elderly patients

Conclusion

Untreated GERD is far from just an annoying inconvenience. It can cause a predictable progression of complications, from esophagitis to stricture, Barrett's, and cancer. The prevention of such complications can be achieved by early diagnosis, treatment, and surveillance for Barrett's esophagus. It is imperative to seek medical evaluation if you are having symptoms of persistent heartburn or acid reflux that have yet to be appropriately evaluated.

Frequently Asked Questions

Can GERD lead to cancer?

Yes. Untreated or chronic GERD may cause Barrett’s esophagus, which is associated with an increased risk of esophageal adenocarcinoma. The annual risk of cancer in Barrett’s esophagus with no dysplasia is 0.3 percent. However, with appropriate surveillance and adequate suppression of stomach acid, this risk is reduced.

How long does it take for GERD to cause Barrett's esophagus?

Barrett's esophagus typically develops after years of chronic acid exposure. Most patients have had GERD symptoms for more than 5 years before diagnosis. However, Barrett's can develop in patients with relatively mild or even asymptomatic GERD, making endoscopic screening important for high-risk individuals regardless of symptom severity.

Is esophageal stricture from GERD reversible?

Established esophageal stricture from fibrous scar tissue is not reversible but is treatable with endoscopic dilation. Repeated dilation sessions are often required alongside intensive PPI therapy to prevent recurrence. Preventing stricture formation through early and consistent GERD treatment is far preferable to managing an established stricture.

Can GERD cause permanent hoarseness?

Chronic LPR from untreated GERD can cause persistent hoarseness due to recurrent acid inflammation of the larynx. With successful treatment of GERD, symptoms of LPR-induced hoarseness resolve within weeks to months. Permanent changes in the vocal cords are unusual but can happen with prolonged, untreated LPR.

Does treating GERD prevent Barrett's esophagus from becoming cancer?

PPI therapy reduces the time of exposure and delays the progression of Barrett’s esophagus. However, PPI therapy does not prevent the development of cancer. Endoscopic eradication therapy in the surveillance of patients with dysplastic Barrett’s esophagus helps in reducing the risk of developing cancer. Both effective PPI therapy and surveillance with endoscopic eradication therapy are important in the treatment of Barrett’s esophagus.

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