POLLEN FOOD ALLERGY SYNDROME ALLERGY
This was previously called Oral Allergy Syndrome (OAS), the term was coined to define the symptoms. It has now been termed Pollen Food Allergy Syndrome (PFAS) more definitively as it mostly affects people who already suffer from pollen allergies and seasonal rhinitis due to cross reactivity.
In PFAS the body mistakes the shape of a protein that it is already sensitive to (a plant pollen) to a similarly shaped protein in certain fruits, vegetables, spices, herbs, and nuts.
The key allergen in PFAS is the pollen associated with the group of foods you are having symptoms from eating.
You may have Pollen-Food Allergy Syndrome if you suffer from oral allergy symptoms to 3 or more of the foods mentioned in cross reactivity section.
If sensitised to alder pollen you may also react to apple, cherry, peach, pear, parsley, celery, almonds and hazelnuts.
If sensitised to birch pollen you may also react to apple, kiwi, pear, peach, plum, nectarine, apricots, cherries, tomato, celery, carrot, Potato, parsnip, pepper, dill, cumin, peas, coriander, fennel, hazelnut, walnut, almonds, peanuts, lentils and beans.
If sensitised to grass pollen you may also react to melon, watermelon, tomatoes, oranges, potatoes and peanuts.
If sensited to mugwort pollen you may also react to apple, celery, carrots, dill, parsley, fennel, coriander, cumin, and sunflower seeds.
If sensitised to ragweed pollen you may also react to watermelon, banana, courgette, cucumber and squash.
Allergy UK - Information and Advice
AAAAI - Oral Allergy Syndrome
Dermnet NZ - Pollen Food Allergy Syndrome
Patient UK - Oral Allergy Syndrome
Articles and Journals
Pollen-food allergy syndrome and component sensitization in adolescents: A Japanese population-based study, 2021
Pollen-related food allergy in children with seasonal allergic rhinitis, 2021
Heterogeneity of Pollen Food Allergy Syndrome in Seven Southern European Countries: the @IT.2020 Multicenter Study, 2021
Molecular approach to a patient’s tailored diagnosis of the oral allergy syndrome, 2020
Insights into pediatric pollen food allergy syndrome, 2020
Food cross-reactivity in patients with pollen allergies, 2020
Pollen-food allergy syndrome in children, 2020
Update on pollen-food allergy syndrome, 2020
Oral Allergy Syndrome, 2010
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