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Eosinophilic Esophagitis (EoE): Symptoms & Diagnosis

Eosinophilic esophagitis (EoE) is a chronic immune-mediated condition in which eosinophil-rich inflammation narrows and stiffens the esophagus, causing difficulty swallowing and food impaction. Diagnosis requires endoscopy with biopsy (≥15 eosinophils per high-power field). Treatment options include dietary elimination, topical swallowed steroids, proton pump inhibitors, and — for refractory cases — biologic therapy.

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What is eosinophilic esophagitis?

The esophagus is the muscular tube that carries food from your throat to your stomach. In EoE, the immune system mounts an allergic response — often triggered by specific foods — that floods the esophageal lining with eosinophils, a type of white blood cell normally absent from esophageal tissue. Over time, this inflammation causes the esophageal wall to thicken and stiffen, eventually leading to narrowing (strictures). 1

EoE was rarely diagnosed before the 1990s but is now one of the most common causes of swallowing difficulty in children and young adults. It affects people of all ages but is more common in males and in people with other allergic conditions such as asthma, eczema, or food allergy. 12

What are the main symptoms?

Symptoms differ somewhat by age group.

In adults and older adolescents: - Dysphagia — the sensation that food is sticking in the chest or throat after swallowing - Food impaction — episodes where food becomes fully lodged and will not pass without medical help - Chest pain that is not related to exercise and does not improve fully with antacids - Heartburn that does not respond to standard reflux treatment

In younger children: - Refusal to eat, slow eating, or cutting food into very small pieces - Vomiting or regurgitation - Poor weight gain

Many adults develop unconscious coping behaviors over years — eating slowly, drinking large amounts of water with meals, avoiding meats and bread — which can mask the true severity.

How is EoE different from GERD?

Gastroesophageal reflux disease (GERD) and EoE share heartburn and chest discomfort, but they have different causes and treatments. Key distinctions:

| Feature | GERD | EoE | |---|---|---| | Cause | Acid moving up from the stomach | Allergic inflammation of the esophageal wall | | Responds to antacids | Usually | Partially or not at all | | Food sticking (dysphagia) | Uncommon | Very common | | Biopsy findings | Normal or mild irritation | Eosinophils in esophageal tissue |

Some people have both conditions simultaneously. Distinguishing them requires endoscopy with biopsies, which is why symptoms that do not resolve with standard reflux treatment warrant a specialist evaluation 1.

How is EoE diagnosed?

Diagnosis requires an upper endoscopy (EGD) performed by a gastroenterologist. During this procedure, the physician passes a thin flexible camera through the mouth to examine the esophagus and obtain small tissue samples (biopsies). The biopsies are sent to a pathologist who counts eosinophils under the microscope.

The 2025 ACG Clinical Guideline defines EoE diagnosis as requiring: symptoms of esophageal dysfunction, at least 15 eosinophils per high-power field on esophageal biopsy, and exclusion of alternate causes of esophageal eosinophilia (including GERD). 1 Endoscopic features assessed using the EoE Endoscopic Reference Score (EREFS) include rings, exudate, furrows, edema, and strictures.

Allergy testing (skin prick testing and specific IgE blood tests) may help identify food triggers, though results do not always predict which foods are causing esophageal inflammation. 2

What foods commonly trigger EoE?

The six foods most commonly implicated are: 1. Milk (dairy) 2. Wheat 3. Eggs 4. Soy 5. Tree nuts and peanuts 6. Seafood (fish and shellfish)

Milk and wheat account for the majority of cases in adults. Identifying your specific triggers typically involves a structured elimination diet followed by careful reintroduction, guided by repeat endoscopies to assess the esophageal response — a process that takes several months and is best supervised by a gastroenterologist who specializes in EoE.

What treatment options exist?

Treatment goals are to reduce symptoms, reverse inflammation, and prevent esophageal scarring. 1

Dietary therapy: Removing trigger foods — either the top six (milk, wheat, eggs, soy, nuts, seafood) or foods identified through a targeted elimination approach — is a proven first-line option and avoids medication side effects.

Topical swallowed steroids: Budesonide or fluticasone, swallowed rather than inhaled, coat the esophageal lining and reduce eosinophil counts. These are widely used as first-line therapy alongside or instead of dietary treatment.

Proton pump inhibitors (PPIs): Some patients with EoE respond to PPIs, which reduce acid and may have anti-inflammatory effects on the esophagus. 1

Biologic therapy: Dupilumab (Dupixent), which blocks the IL-4/IL-13 pathway, is FDA-approved for EoE in patients 12 years and older and provides an option for those who do not respond to diet or steroids. 1

Esophageal dilation: When strictures have developed and swallowing is severely impaired, mechanical dilation by a gastroenterologist can provide symptom relief — though it treats the complication, not the underlying inflammation.

When should I see a doctor for swallowing difficulty?

Any persistent difficulty swallowing deserves medical evaluation. You should seek care promptly — or go to an emergency room — if food becomes completely stuck and you cannot swallow your own saliva, or if you experience chest pain you have not had before.

For longstanding symptoms, a Gale clinician can evaluate you and refer you to the right gastroenterologist. Many people with EoE live years with the condition before receiving a diagnosis, so describing the full picture — including any coping habits you have developed around eating — helps clinicians identify the problem sooner.

Common questions

Can EoE go away on its own?

EoE is a chronic condition that does not typically resolve without treatment. However, with appropriate dietary changes or medical therapy, most people achieve significant or full symptom relief, and the esophageal inflammation can reverse.

Is EoE the same as a food allergy?

EoE is driven by allergic immune responses to foods, but it is distinct from classic IgE-mediated food allergy. Food allergy reactions are rapid (within minutes), while EoE inflammation builds slowly over days to weeks. The two conditions can coexist in the same person.

Do I need an allergist or a gastroenterologist for EoE?

Both can play a role. Gastroenterologists perform the endoscopy needed for diagnosis and manage the esophageal aspects of treatment. Allergists help identify food triggers through testing and guide elimination diets. Many patients benefit from coordinated care between both specialists.

What happens if EoE is left untreated?

Untreated, ongoing inflammation can lead to fibrous scarring and narrowing of the esophagus, making food impactions more frequent and more dangerous. Early treatment reduces this risk.

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When to seek emergency care

  • —Food is completely stuck in your esophagus and you cannot swallow saliva — go to an emergency room
  • —Severe chest pain, especially if new or different from your usual symptoms
  • —Drooling or inability to manage secretions because of an obstruction
  • —Signs of choking or difficulty breathing

Call 911 or go to the nearest emergency room for a complete esophageal food impaction.

This article provides general health education and does not replace evaluation by a clinician. If you have persistent swallowing difficulty, speak with a Gale provider, who can refer you to a gastroenterologist for specialist assessment.

References

  1. 1.Dellon ES, Muir AB, Katzka DA, et al. (2025). ACG Clinical Guideline: Diagnosis and Management of Eosinophilic Esophagitis. American Journal of Gastroenterology. doi:10.14309/ajg.0000000000003194 ✓EoE diagnostic criteria (≥15 eos/hpf plus symptom criterion); treatment recommendations including dietary therapy, topical steroids, PPIs, biologic therapy (dupilumab), and esophageal dilation; EREFS scoring
  2. 2.Boyce JA, Assa'ad A, Burks AW, Jones SM, Sampson HA, Wood RA, et al. (2010). Guidelines for the Diagnosis and Management of Food Allergy in the United States: Report of the NIAID-Sponsored Expert Panel. Journal of Allergy and Clinical Immunology. doi:10.1016/j.jaci.2010.10.007 ✓Food allergy testing context; role of skin prick testing and specific IgE blood tests for identifying food triggers in food-driven allergic conditions of the GI tract

2 sources, numbered by first appearance. General health information, not medical advice — synthetic demonstration content.