This syndrome is now more commonly called Pollen Food Allergy Syndrome (PFAS) - the term "Oral Allergy" has been adopted to define the symptoms of the syndrome.
Sufferers of Oral Allergy are usually people who already suffer from pollen allergies and seasonal rhinitis and this is due to cross reactivity.
The allergens associated with oral allergy are initially a tree or plant pollen and associated with those pollens are various fruits, herbs and vegetables.
Pollens usually associated with Oral Allergy are Alder, Birch, Grass, Mugwort and Ragweed pollens.
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.