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With or without insurance, you can get a quick, personalized allergy test when it’s convenient for you.Read More
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Everyone has their own unique combination of allergic triggers and not all of them are obvious.Read More
Anaphylaxis, also called anaphylactic shock, is an acute, life-threatening allergic reaction.Read More
Digestive and gastrointestinal issues are closely tied to what you eat.Read More
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Food allergies are the body’s immune system reacting to something that is normally harmless to most people–like milk or eggs.Read More
If you suspect allergies are the cause of your symptoms, it is important to consult with your healthcare professional to get properly diagnosed.Read More
There are options when it comes to testing to identify allergic triggers.Read More
After eating a bowl of fruit and nut cereal, this 8-year-old was covered in large hives—what caused her reaction?Read More
Get answers to some of the most common questions about allergy.Read More
If you have an allergy to pollen and experienced an itchy mouth and/or throat after eating fresh fruit and/or raw vegetables, you may have Oral Allergy Syndrome (OAS). OAS is a cross-reaction that can occur when someone who is allergic to pollen eats certain raw fruit, vegetables or some nuts. Your immune system identifies certain proteins within the food you’re eating as the same as pollen because they look identical. A cross-reaction occurs when the proteins in one substance (typically pollen) are similar to the proteins found in another substance (typically food). And because of this cross-reactivity between pollen and food, OAS is sometimes called Pollen-Food Allergy Syndrome (PFAS).
People affected by OAS can usually tolerate the same fruit or vegetables after they have been cooked because the proteins are distorted during the heating process - the immune system no longer recognizes the food.
These symptoms could become worse during times of the year when the pollen counts are high (usually in spring or fall). And these symptoms can start occurring at any time, even if you’ve been eating the food for years without any problems.1
People with OAS typically have an allergy to birch trees, ragweed or grass pollen. OAS is not common in young children; it generally shows up later in life, for those who have already been eating the questionable fruit and vegetables for years without a problem.1
Foods that may cause OAS include:
You may think what you are experiencing is harmless, but it’s important to find out what’s causing your symptoms – your allergic triggers. A simple blood test—together with your medical history—can help identify underlying allergen triggers. Be sure to consult with your healthcare professional because learning what could be behind your symptoms may also help you avoid more serious problems in the future.