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Incidence of Food allergy among patients with allergic conjunctivitis. 2023

Shaimaa H Fouad, and Shereen A Baioumy, and Omar F M Zidan, and Mohamed A Hegab, and Aya Elgendy, and Marwa Hamdy, and Ghada M Mohsen, and Sylvia W Roman
Department of Internal Medicine/Allergy and Clinical Immunology, Faculty Medicine, Ain Shams University, Cairo, Egypt.

The prevalence of ocular allergy is increasing worldwide. Skin prick test is widely recognized as the most reliable method for diagnosing the incriminating allergen as regards type I hypersensitivity reactions. Food allergy results as immunological response to food protein which leads to occurrence of allergic conjunctivitis (AC), allergic rhinitis, asthma, atopic dermatitis, and eosinophilic esophagitis. There is a scarcity of research investigating the association between food allergy and AC. This retrospective cohort study aimed to determine the incidence of food allergy within AC patients and its linkage to disease intensity and to compare the response to sublingual immunotherapy after 4 months of therapy. The study included 240 individuals diagnosed with AC. Of these patients, only 214 (89.16%) cases exhibited positive skin prick test results and showed incidence of food allergy of 29.6 %. After 4 months of sublingual allergen immunotherapy, the total serum IgE level and the grades of severity decreased significantly (p 0.001 for each). On comparing patients with food allergy on sublingual immunotherapy and patients without food allergy and on sublingual immunotherapy, the change in total serum IgE concentration and the grade of severity did not differ among the two groups (p value was 0.63 and 1.00 respectively). In conclusion, food allergies can contribute to the development of AC. Sublingual allergen immunotherapy can be proposed as a promising therapeutic option for AC patients.

UI MeSH Term Description Entries
D007073 Immunoglobulin E An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). IgE
D003233 Conjunctivitis, Allergic Conjunctivitis due to hypersensitivity to various allergens. Allergic Conjunctivitis,Conjunctivitis, Atopic,Conjunctivitis, Giant Papillary,Conjunctivitis, Vernal,Keratoconjunctivitis, Vernal,Allergic Conjunctivitides,Atopic Conjunctivitides,Atopic Conjunctivitis,Conjunctivitides, Allergic,Conjunctivitides, Atopic,Conjunctivitides, Giant Papillary,Conjunctivitides, Vernal,Giant Papillary Conjunctivitides,Giant Papillary Conjunctivitis,Keratoconjunctivitides, Vernal,Papillary Conjunctivitides, Giant,Papillary Conjunctivitis, Giant,Vernal Conjunctivitides,Vernal Conjunctivitis,Vernal Keratoconjunctivitides,Vernal Keratoconjunctivitis
D005512 Food Hypersensitivity Gastrointestinal disturbances, skin eruptions, or shock due to allergic reactions to allergens in food. Allergy, Food,Food Allergy,Hypersensitivity, Food,Allergies, Food,Food Allergies,Food Hypersensitivities,Hypersensitivities, Food
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000485 Allergens Antigen-type substances that produce immediate hypersensitivity (HYPERSENSITIVITY, IMMEDIATE). Allergen
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D015994 Incidence The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases in the population at a given time. Attack Rate,Cumulative Incidence,Incidence Proportion,Incidence Rate,Person-time Rate,Secondary Attack Rate,Attack Rate, Secondary,Attack Rates,Cumulative Incidences,Incidence Proportions,Incidence Rates,Incidence, Cumulative,Incidences,Person time Rate,Person-time Rates,Proportion, Incidence,Rate, Attack,Rate, Incidence,Rate, Person-time,Rate, Secondary Attack,Secondary Attack Rates

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