Inappropriate Immune Response to Gluten – Symptoms and Prognosis. Celiac Disease and Inappropriate Immune Response to Gluten

Gluten represents a composite of plant-based proteins inherently present in staple cereal grains—namely wheat, rye, and barley—while oats frequently become cross-contaminated during processing. Though traditionally associated with baked goods, pasta, and cereal products, this protein matrix is also concealed within a broad spectrum of processed foods, including confectionery items containing wheat flour derivatives, processed meats with gluten-based stabilizers, and dairy products incorporating gluten-derived thickeners [3]. Current epidemiological evidence indicates that gluten-triggered allergic responses—encompassing both immunoglobulin E (IgE)-mediated and non-IgE-mediated pathways—affect approximately 6% of the pediatric population and 2% of adults, manifesting through gastrointestinal disturbances (e.g., diarrhea, bloating), cutaneous reactions (e.g., urticaria, atopic dermatitis), and respiratory symptoms (e.g., allergic rhinitis, bronchial asthma) [4]. Notably, wheat—the most common allergenic cereal among gluten-containing grains—harbors over 20 distinct allergens, implying that gluten sensitivity does not necessarily equate to a comprehensive wheat allergy. The cornerstone of management remains strict adherence to a gluten-free dietary regimen, systematically excluding all gluten-containing sources.

Hypersensitivity responses to gluten-containing cereals can be categorized based on the temporal pattern of symptom onset into **immediate-type reactions**, which emerge within sixty minutes of gluten ingestion and are mediated by gluten-specific immunoglobulin E (IgE) antibodies, and **delayed-type reactions**, whose clinical manifestations develop between several hours and up to forty-eight hours post-exposure. The immediate reaction spectrum may include isolated or concurrent symptoms such as: persistent nausea culminating in emesis, acute-onset diarrhea, life-threatening anaphylactic shock, profuse aqueous rhinorrhea, pruritic urticarial lesions, bronchospasm with resultant dyspnea, and inflammatory dermatological eruptions. Conversely, delayed reactions operate independently of IgE mechanisms and typically present with protracted gastrointestinal disturbances (predominantly diarrhea) alongside exacerbations of pre-existing atopic dermatitis. Notably, the clinical presentation of gluten allergy exhibits significant age-related variability: adult patients most frequently experience recurrent urticaria, angioedema (including Quincke’s edema), anaphylactic episodes, and chronic gastrointestinal dysfunction. In pediatric populations, however, atopic skin lesions predominate, with respiratory or gastrointestinal symptoms occurring far less frequently—a distinction corroborated by epidemiological data [5,6].

Celiac disease represents a gluten-triggered autoimmune enteropathy characterized by chronic inflammatory responses leading to villous atrophy within the small intestinal mucosa, a phenomenon extensively documented in clinical research [7]. While both celiac disease and gluten allergy are categorized under the umbrella term of food intolerances, their pathomechanisms, clinical courses, and prognostic outcomes differ substantially—as emphasized by current gastroenterological guidelines [8]. In both conditions, adherence to a strict gluten-free elimination diet is mandatory; however, gluten allergy—particularly in pediatric populations—exhibits potential for spontaneous symptom remission, with high rates of self-resolving sensitivity observed as children mature [9,10]. In recent years, medical literature has increasingly recognized a third distinct entity: non-celiac gluten sensitivity (NCGS), whose pathogenesis does not involve autoimmune or allergic mechanisms and whose prevalence—based on preliminary epidemiological estimates—may exceed that of both celiac disease and classical gluten allergy [11].