For this reason, it is important to see a board-certified allergist. It is important to distinguish between OAS and severe life threatening food allergy. If you are allergic to this pollen, you may experience OAS symptoms when eating bell peppers, broccoli, cabbage, cauliflower, chard, garlic, onions, parsley, and spices, such as aniseed, caraway, coriander, fennel and black pepper. Mugwort Pollen: This is a different weed pollen that is also found in DFW area and pollinates in the fall. If you are allergic to ragweed pollen, you may develop OAS symptoms when eating melons, bananas, cucumbers, zucchini, or white potatoes. Ragweed Pollen: This is a common weed pollen found in the DFW area during the late summer and fall season. If you are allergic to these grasses, you may experience OAS symptoms when eating peaches, melons, tomatoes, oranges, and white potatoes.
Northern Grass Pollen: Some of the common northern grasses include timothy, orchard, rye, fescue, and bluegrass. If you are allergic to birch tree pollen, you might also experience OAS symptoms when you eat apples, apricots, cherries, peaches, pears, plums, kiwi, carrots, celery, parsley, legumes (such as peanuts, soybean) and tree nuts (such as almond and hazelnut). In fact, 50 to 75% of adults allergic to birch tree pollen develop symptoms of OAS.īirch Tree Pollen: This is a common tree pollen, pollinating in the springtime. Those with oral allergy syndrome typically have allergy to birch, ragweed, or grass pollens. Foods, such as, dairy, seafood, or meats do not cause OAS. Only foods that come from plants can cause OAS. Not all patients with allergic rhinitis develop OAS, but all patients with OAS have an underlying pollen allergy. It is more common in older children and adults. Severe life-threatening allergic reactions from this are very rare.
These symptoms usually occur immediately after eating a raw fruit or vegetable and usually subside quickly as the particular food is either swallowed or removed from the mouth. Exposure to these food proteins in patients that have pollen allergy may confuse the immune system causing itching and swelling of lips, mouth, tongue, throat, and face. The proteins found in these foods are similar to the proteins found in pollen. It is due to cross-reactivity between certain pollens and certain raw fruits and raw vegetables, spices, and nuts. Oral allergy syndrome (OAS) is also known as pollen-food allergy syndrome.
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