Oral allergy syndrome
Also known as the pollen-food allergy syndrome.
Localized allergic reaction, patients develop itching or tingling of the oropharyngeal cavity. An itchy throat must be distinguished from laryngeal involvement where airway obstruction is a danger.
Caused by cross-reactivity between certain pollen and food antigens. Fruit are particularly implicated. Cooking often produces tolerance, presumably through alteration in 3 dimensional structure of antigens.
It has been described with 'young' wine (aged less than a year) and grape juice where the food allergen turned out to be Hymenoptera antigen, mostly but not exclusively of paper wasps (Polistes spp.'). Such observations are important as allergy is complex and open to misinterpretation.
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