Esophageal Inflammation in Dogs (Esophagitis)

  • Occurrence: common
  • Location of disease: Chest
Author: Dr. med. vet. Gisa Löwe | Last modified: 09.08.2026
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When to visit the vet?

Non-urgent see a veterinarian within 2–3 days

?

If the condition worsens / symptoms persist, consult a veterinarian.

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Definition

Esophagitis in dogs is an inflammatory condition of the esophageal mucosa that can be caused by various factors and leads to a variety of symptoms that can significantly impair the animal’s well-being.

Das Wichtigste auf einen Blick

Esophagitis in dogs is an inflammation of the esophageal mucosa that can be caused by various factors such as gastroesophageal reflux (GER), foreign bodies, or infections. Gastroesophageal reflux, where stomach acid flows back into the esophagus, is a common cause and can be exacerbated by a weakness of the lower esophageal sphincter or by certain anesthetics. Symptoms include swallowing disorders, pain on swallowing, increased salivation, and regurgitation of undigested food remains. Diagnosis begins with a medical history and a clinical examination, followed by an endoscopy for direct examination of the esophagus. X-rays or contrast studies can also be helpful. Treatment depends on the cause and severity of the condition and often includes feeding adjustments to relieve the esophagus. Medications such as antacids and proton pump inhibitors are used to control acid reflux. For infections, antibiotics or antifungals are used, while foreign bodies may require surgical intervention. The prognosis is usually favorable with early diagnosis and treatment, but chronic cases can lead to complications. Preventive measures include a balanced diet and the avoidance of irritating substances. Regular veterinary check-ups are important to detect problems early.

Ursachen

The esophagus is a muscular tube that transports food and liquids from the throat to the stomach. It is lined with a sensitive mucous membrane that can become inflamed if irritated or damaged. This inflammation can be both acute and chronic and has various causes.

A common cause of esophagitis is gastroesophageal reflux (GER), where stomach acid flows back into the esophagus and damages the lining. This can be exacerbated by a weakness of the lower esophageal sphincter or by certain anesthetics. Another cause can be foreign bodies that get stuck in the esophagus and cause mechanical damage.

Additionally, infections caused by bacteria or fungi can lead to inflammation of the esophagus. Certain medications that irritate the lining or chemical burns from swallowing corrosive substances are also possible causes. In rare cases, allergies or autoimmune diseases can also play a role.

Symptoms

Rare symptoms:

Symptoms of esophagitis in dogs can vary depending on the severity of the inflammation and the underlying cause. A common symptom is regurgitation, where undigested food or liquids flow back from the esophagus. This is often painless and occurs immediately after eating.

Further symptoms can include vomiting, excessive salivation, difficulty swallowing, loss of appetite, and weight loss. Some dogs also show signs of pain in the throat or chest area, which can manifest as restlessness or discomfort.

In severe cases, the inflammation can lead to a stricture, i.e., a narrowing of the esophagus, which can further worsen the symptoms. It is important to recognize these symptoms early to prevent them from getting worse.

Diagnose

The diagnosis of esophagitis usually begins with a thorough medical history and a clinical examination by the veterinarian. The owner is asked about the feeding history, the occurrence of symptoms, and possible triggers. A physical examination can reveal signs of pain or discomfort in the throat area.

To confirm the diagnosis, an endoscopy of the esophagus can be performed. A flexible instrument with a camera is inserted through the mouth into the esophagus to examine the mucosa directly for inflammation, injuries, or foreign bodies. This examination also allows for the collection of tissue samples for biopsy.

X-rays or a contrast study of the esophagus can also be helpful in identifying structural changes or foreign bodies. Blood tests may be performed to rule out infections or systemic diseases as the cause.

Therapie

The treatment for esophagitis depends on the cause and the severity of the condition. An important part of the therapy is adjusting the feeding routine. It is recommended to offer small, frequent meals with soft or liquid food to reduce the mechanical stress on the esophagus.

Medications such as antacids or proton pump inhibitors can be used to reduce acid production in the stomach and control reflux. Prokinetics can help speed up gastric emptying and increase pressure on the lower esophageal sphincter.

For bacterial or fungal infections, appropriate antibiotics or antifungals are prescribed. In cases where foreign bodies or chemical burns are the cause, surgical removal or interventional endoscopy may be necessary. Pain relievers and anti-inflammatory medications can help alleviate discomfort.

Prognose und Nachsorge

The prognosis for dogs with esophagitis depends on the cause and the severity of the condition. With early diagnosis and adequate treatment, the prognosis is generally favorable, and many dogs recover completely. However, chronic or untreated cases can lead to complications such as strictures or chronic inflammation.

Successful treatment often requires long-term adjustment of the feeding routine and possibly permanent medicinal control of acid reflux. Regular follow-up care with the veterinarian is important to monitor the success of the therapy and make adjustments.

Prävention

To ensure the prevention of esophagitis, dogs should be fed a balanced and appropriate diet. It is important to choose foods that are easily digestible and do not cause mechanical injuries to the esophagus. As a preventive measure, special food bowls can also be used to prevent the bolting of food.

Avoiding medications or substances that could irritate the esophagus is also crucial. In dogs with a known tendency for gastroesophageal reflux, prophylactic treatment with antacids can be considered. Regular veterinary check-ups help to identify and treat potential problems early on.

Safe handling of potentially dangerous or corrosive substances in the household is important to reduce the risk of chemical burns. Additionally, care should be taken to ensure that dogs do not swallow foreign bodies that could get stuck in the esophagus.

Ausblick auf aktuelle Forschung

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Esophagitis is an inflammation of the esophagus. It most commonly arises from reflux of stomach acid; however, it can also be triggered by medications, infections, chemical burns, or immunologically mediated forms such as eosinophilic esophagitis. The most important research outlook today is to differentiate these very different causes earlier and more accurately, because although they may look similar, they are not treated the same. (ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov)

A central field of research is more precise diagnostics. In addition to classic endoscopy, procedures such as impedance-pH monitoring, functional measurements of the esophagus, and the examination of the mucosal barrier are gaining importance. The goal is not only to record visible mucosal damage but also to recognize early functional changes before ulcers, scars, or strictures occur. (pubmed.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov)

A second focus is individualized therapy. In reflux-related esophagitis, work is being done on a better understanding of barrier function and motility; in eosinophilic forms, more targeted anti-inflammatory strategies are the priority. The microbiome of the esophagus is also increasingly being studied. (pubmed.ncbi.nlm.nih.gov, pubmed.ncbi.nlm.nih.gov)

Overall, the outlook is good: Research is clearly moving away from a blanket “acid disease” toward a differentiated, cause-related esophagitis medicine with earlier diagnosis and more targeted treatment.

Frequently Asked Questions (FAQs)

1. What is esophagitis?
Esophagitis is an inflammation of the lining of the esophagus. It can be acute or chronic. Typical triggers include rising stomach acid, the intake of certain medications, foreign bodies, or chemical burns. The inflammation ranges from mild redness to severe ulceration.
2. What are the possible causes?
The most common causes are anesthesia with reflux of stomach acid, persistent vomiting, foreign bodies, ingestion of corrosive substances, tablets that get stuck in the esophagus (especially doxycycline and clindamycin), hiatal hernias, and gastroesophageal reflux (GER). Worm infestation with Spirocerca lupi is also a cause in endemic areas.
3. What symptoms does an affected dog show?
Typical symptoms include increased swallowing, gagging, regurgitation of undigested food, refusal to eat, salivation, and pain on swallowing. Some dogs stretch their necks or show a strangely hunched posture while eating. Severe cases are accompanied by weight loss and fever.
4. How is the diagnosis made?
Endoscopy is the method of choice. It directly shows the inflammation, erosions, ulcers, or strictures and allows for biopsies to be taken. Additionally, contrast X-rays, ultrasound of the neck and abdomen, and, depending on suspicion, an investigation for reflux are performed.
5. How is esophagitis treated?
Central to treatment are acid blockers such as omeprazole or pantoprazole to reduce stomach acid, sucralfate to protect the inflamed mucosa, and prokinetics such as metoclopramide or cisapride to promote gastric emptying. For pain, appropriate analgesics are used, and for infections, antibiotics.
6. What role does feeding play?
During the acute phase, several small meals of soft, mushy, or ball-shaped food should be given. Low-fat, highly digestible food reduces gastric residence time and the risk of reflux. In severe cases, feeding is temporarily done via a gastric tube to rest the esophagus.
7. What is an esophageal stricture and how does it develop?
After severe esophagitis, scarred connective tissue can form during healing, which narrows the esophagus. This stricture leads to renewed regurgitation, this time also of liquid food. Treatment is carried out by endoscopic balloon dilation, often in several sessions.
8. Which medications frequently trigger esophagitis?
Tablets administered dry without sufficient liquid can get stuck in the esophagus and trigger a corrosive reaction. Doxycycline, clindamycin, and non-steroidal anti-inflammatory agents are particularly notorious. These medications should always be administered with liquid or a small amount of food.
9. How high is the risk of relapse?
Without treating the underlying cause, the risk of recurrence is high. Chronic reflux, repeated anesthesia in predisposed dogs, or constant ingestion of foreign bodies favor recurrence. A consistent change in feeding and medication schedules is crucial.
10. What is the prognosis?
Mild, acute esophagitis heals without consequences within two to three weeks under consistent therapy. Severe cases with pronounced ulceration or stricture formation have a more guarded prognosis and require longer, often multi-month care.

Literatur

  • Kook, P. H. (2021). Esophagitis in cats and dogs. Veterinary Clinics of North America: Small Animal Practice, 51(1), 1–15. https://doi.org/10.1016/j.cvsm.2020.08.003
  • Han, E. (2003). Diagnosis and management of reflux esophagitis. Clinical Techniques in Small Animal Practice, 18(4), 231–238. https://doi.org/10.1016/S1096-2867(03)00051-3
  • Marks, S. L., Kook, P. H., Papich, M. G., Tolbert, M. K., & Willard, M. D. (2018). ACVIM consensus statement: Support for rational administration of gastrointestinal protectants to dogs and cats. Journal of Veterinary Internal Medicine, 32(6), 1823–1840. https://doi.org/10.1111/jvim.15337
  • Zacuto, A. C., Marks, S. L., Osborn, J., Douthitt, K. L., Hollingshead, K. L., Hayashi, K., Kapatkin, A. S., Pypendop, B. H., & Belafsky, P. C. (2012). The influence of esomeprazole and cisapride on gastroesophageal reflux during anesthesia in dogs. Journal of Veterinary Internal Medicine, 26(3), 518–525. https://doi.org/10.1111/j.1939-1676.2012.00929.x
  • Fernandez Alasia, A. C., Levionnois, O., & Raillard, M. (2021). A systematic review of the methods of assessment of gastro-oesophageal reflux in anaesthetized dogs. Animals, 11(3), Article 852. https://doi.org/10.3390/ani11030852
  • Lambertini, C., Pietra, M., Galiazzo, G., Torresan, F., Pinna, S., Pisoni, L., & Romagnoli, N. (2020). Incidence of gastroesophageal reflux in dogs undergoing orthopaedic surgery or endoscopic evaluation of the upper gastrointestinal tract. Veterinary Sciences, 7(4), Article 144. https://doi.org/10.3390/vetsci7040144