Wheat allergy (WA)

Symptoms of wheat allergy: Recognize signs and reactions
Wheat allergy presents with a broad spectrum of symptoms that can affect multiple organ systems. In IgE-mediated cases, symptoms typically appear within two hours of wheat ingestion and may range from mild skin reactions to severe anaphylaxis. The severity and presentation are influenced by age and the underlying immune mechanism.
Symptoms of IgE-mediated wheat allergy: possible reactions
IgE-mediated wheat allergy is a form of immediate-type allergy in which symptoms typically occur within two hours of wheat consumption. The clinical manifestations can affect various organ systems and range from mild symptoms to severe systemic reactions such as anaphylaxis.
- Skin: urticaria (hives), angioedema, eczema, swelling, itching
- Respiratory tract: rhinitis, erythema, wheezing, asthma, scratchy throat, stuffy nose
- Gastrointestinal: Oral allergy syndrome, vomiting, abdominal pain, nausea, diarrhea
- Cardiovascular system: Anaphylaxis (potentially life-threatening)
- Atopic dermatitis (in children)
Age-dependent manifestations of wheat allergy
Infancy and early childhood
IgE-mediated immediate reactions:
- Skin (e.g., urticaria)
- Respiratory tract (e.g., wheezing)
- Gastrointestinal tract (e.g., vomiting, diarrhea)
- Cardiovascular system (e.g., hypotension)
Late reactions:
- Worsening of atopic dermatitis
Non-IgE-mediated reactions - FPIES (food protein-induced enterocolitis syndrome):
- Severe gastrointestinal reactions
- Occurring several hours after wheat consumption
- Symptoms: vomiting, lethargy, diarrhea
Adulthood
WDEIA (wheat-dependent exercise-induced anaphylaxis):
- Trigger-associated form of wheat allergy
- Triggered by a combination of wheat consumption and augmentation factors
- Augmenting factors include: medication, physical exertion, hormonal fluctuations, alcohol, psychological stress, stress, lack of sleep
- Leads to severe systemic reactions, especially anaphylaxis
Severe wheat allergies: link to cardiovascular symptoms
Current studies show that severe allergic reactions to wheat —especially anaphylactic shock—are often accompanied by cardiovascular symptoms in adults. In most cases, two additional organ systems are affected. Skin reactions and cardiovascular complaints are particularly common, followed by respiratory symptoms
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Wheat allergy (WA)
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- Neyer A, Dölle-Bierke S, Höfer V, Grünhagen J, Beyer K, Worm M. Prevalence and Clinical Symptoms of Wheat Allergy in Adults and Adolescents in Central Europe. Clin Exp Allergy. 2025 Apr;55(4):319-329. doi: 10.1111/cea.70017. Epub 2025 Feb 19. PMID: 39973050; PMCID: PMC11994253.
- German Society for Gastroenterology, Digestive and Metabolic Diseases (DGVS). (2021). S2k Guideline on Celiac Disease (AWMF Registry Number 021-021). Association of Scientific Medical Societies (AWMF).
