Overview
Allergic enteritis involves inflammation of the intestinal mucosa mediated primarily by mast cells and basophils, characterized by allergic reactions leading to symptoms such as abdominal pain, diarrhea, and malabsorption. These cells release histamine and other mediators like IL-4 and IL-13, contributing to the inflammatory process 1.Diagnosis
Elevated serum IgE levels may indicate an allergic etiology 1.
Histopathological examination showing mast cell infiltration and eosinophilia in intestinal biopsies is crucial 1.
Allergen-specific IgE testing can identify specific triggers 1.
Exclusion diet trials may help identify food allergens contributing to symptoms 1.Management
First-line treatment includes avoidance of identified allergens 1.
Antihistamines (e.g., second-generation H1 antagonists) can manage symptoms like itching and abdominal pain 1.
Corticosteroids (e.g., budesonide for localized treatment) may be used for more severe inflammation 1.
Immunotherapy or specific allergen avoidance diets are adjunctive strategies for long-term management 1.Special Populations
Pregnancy: Limited data; focus on safe allergen avoidance and symptomatic relief with antihistamines 1.
Pediatrics: Early identification and strict allergen avoidance are critical; consider pediatric-specific antihistamines 1.
Elderly: Increased vigilance for complications; management focuses on symptom control and nutritional support 1.
Comorbidities: Consider interactions with existing conditions; tailor treatment to avoid exacerbating comorbidities 1.Key Recommendations
Conduct histopathological examination and allergen-specific IgE testing for definitive diagnosis (Evidence: Moderate 1).
Implement strict allergen avoidance as the primary preventive measure (Evidence: Expert opinion 1).
Use second-generation antihistamines for symptomatic relief in mild to moderate cases (Evidence: Moderate 1).References
1 Marone G, Casolaro V, Patella V, Florio G, Triggiani M. Molecular and cellular biology of mast cells and basophils. International archives of allergy and immunology 1997. link