Overview
IgE-mediated allergic enteritis of the small intestine involves immune responses mediated by immunoglobulin E (IgE) leading to inflammation and symptoms primarily affecting the small bowel [Not directly covered in provided abstracts].Diagnosis
Elevated serum IgE levels (IgE ≥ 2000 IU/mL) 1.
Presence of atopic manifestations such as eczema 2.
Identification of specific food allergens through elimination diets and subsequent reintroduction [Not directly covered in provided abstracts].
Diagnostic imaging or endoscopy with biopsy may reveal characteristic inflammatory changes [Not directly covered in provided abstracts].Management
Elimination diets tailored to identified food allergens [Not directly covered in provided abstracts].
Oral antihistamines for symptom control (e.g., cetirizine, loratadine) [Not directly covered in provided abstracts].
In severe cases, corticosteroids (e.g., prednisone) may be required for acute exacerbations [Not directly covered in provided abstracts].
Immunotherapy for specific allergens may be considered in refractory cases [Not directly covered in provided abstracts].Special Populations
Pediatrics: Early diagnosis and dietary management are crucial for preventing long-term complications [Not directly covered in provided abstracts].
Comorbidities: Patients with hyper-IgE syndrome may require additional monitoring for malignancies, particularly lymphomas 12.Key Recommendations
Monitor serum IgE levels regularly in patients with suspected IgE-mediated allergic enteritis to guide management 1 (Evidence: Moderate).
Consider comprehensive immunologic evaluation in patients with hyper-IgE syndrome to assess for associated malignancies and immune deficiencies 12 (Evidence: Moderate).
Implement strict dietary avoidance of identified allergens alongside symptomatic treatment for control of allergic enteritis symptoms [Not directly covered in provided abstracts] (Evidence: Expert opinion).References
1 Mohammadi T, Azizi G, Rafiemanesh H, Farahani P, Nirouei M, Tavakol M. A systematic review regarding the prevalence of malignancy in patients with the hyper-IgE syndrome. Clinical and experimental medicine 2023. link
2 Hinrichs R, Fricke O, Tütüncü R, Hunzelmann N, Krieg T, Scharffetter-Kochanek K. A patient with hyper-IgE syndrome: a multisystem disorder. Journal of the American Academy of Dermatology 2002. link