What is Eosinophilic Gastroenteritis

Eosinophilic Gastroenteritis (EG) is a rare digestive disorder characterized by the abnormal accumulation of eosinophils—a type of white blood cell—in the tissue of the stomach and small intestine. This infiltration causes inflammation and damage to the gastrointestinal tract, leading to a variety of debilitating symptoms such as abdominal pain, nausea, vomiting, and diarrhea.

What causes Eosinophilic Gastroenteritis?

The exact cause of Eosinophilic Gastroenteritis remains unknown, though it is widely considered an allergic or immune-mediated condition. The body mistakenly identifies certain food proteins or environmental triggers as threats, causing the immune system to send an excessive number of eosinophils to the gut lining. Unlike standard food allergies, Eosinophilic Gastroenteritis does not always follow a traditional IgE-mediated pathway, making it complex to diagnose and manage.

Which body systems are affected by Eosinophilic Gastroenteritis?

The condition can affect any part of the gastrointestinal tract, but it is primarily classified by the depth of tissue involvement:

• Mucosal: Affects the inner lining, often leading to malabsorption, protein-losing enteropathy, and weight loss.


• Muscular: Affects the muscle layer of the gut wall, which can cause thickening and bowel obstruction.


• Serosal: Affects the outer layer, often resulting in eosinophilic ascites (fluid buildup in the abdomen).

How common is Eosinophilic Gastroenteritis?

Eosinophilic Gastroenteritis is a rare disease with an estimated prevalence of approximately 1 to 20 per 100,000 individuals. It can occur at any age, though it is most frequently diagnosed in adults between the ages of 30 and 50. Currently, 38 members of the DiseaseMaps.org community are living with Eosinophilic Gastroenteritis, highlighting the importance of shared experiences in navigating this rare diagnosis.

What differentiates Eosinophilic Gastroenteritis from other conditions?

It is distinct from other eosinophilic gastrointestinal disorders (EGIDs) like Eosinophilic Esophagitis (EoE) because it specifically involves the stomach and intestines rather than the esophagus. While symptoms may mimic inflammatory bowel disease (IBD) or celiac disease, Eosinophilic Gastroenteritis is uniquely identified by the high count of eosinophils found during a biopsy of the stomach or intestinal tissue.

Next steps

• Consult a gastroenterologist or an immunologist specializing in rare digestive disorders.


• Keep a detailed food and symptom diary to help identify potential triggers.


• Join the DiseaseMaps.org community to connect with others who have been diagnosed with Eosinophilic Gastroenteritis.

Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• Orphanet: Portal for rare diseases and orphan drugs


• American Partnership for Eosinophilic Disorders (APFED)


• PubMed Central: Current clinical guidelines on EGIDs