Pollen-Fruit Syndrome: Symptoms, Causes, and Management

Pollen-fruit syndrome (PFS), also known as Oral Allergy Syndrome (OAS), occurs when individuals allergic to pollen experience allergic reactions to certain fruits, vegetables, and nuts. This is due to the similarity in protein structures between pollen and certain plant-based foods. 

Symptoms of Pollen-Fruit Syndrome 

Common symptoms include itching, tingling, or swelling of the lips, mouth, and throat after consuming raw fruits or vegetables. The reaction usually occurs within minutes of ingestion and is often mild, though in rare cases, more severe reactions such as anaphylaxis can occur. Individuals allergic to birch pollen, for example, may react to fruits like apples, peaches, and cherries due to cross-reactivity between pollen and proteins in these foods. 

Common Foods Triggering Pollen-Fruit Syndrome 

People with Pollen-Fruit Syndrome often react to specific groups of foods: ‍

1. ‍Birch Pollen Allergy: Apples, peaches, cherries, carrots, hazelnuts ‍
2. Grass Pollen Allergy: Tomatoes, melons, oranges ‍
3. Ragweed Pollen Allergy: Bananas, melons, zucchini, cucumbers 

These foods contain proteins similar to those found in pollens, which confuse the immune system and trigger an allergic response. Cooking or peeling fruits and vegetables often helps, as heat and peeling can break down the allergenic proteins. 

Managing Pollen-Fruit Syndrome 

Managing Pollen-Fruit Syndrome involves avoiding trigger foods or preparing them in a way that minimizes allergic reactions. Antihistamines can help manage symptoms after accidental exposure, while allergy testing can identify specific sensitivities. Immunotherapy for pollen allergies may also reduce food reactions over time. 

It’s essential to consult with an allergist if you suspect Pollen-Fruit Syndrome, especially if you experience any severe or unusual symptoms. You can find more information about diagnosing food allergies from the Los Angeles Food Allergy Institute. 

How HeyAllergy Can Help with Pollen-Fruit Syndrome 

If you’re dealing with Pollen-Fruit Syndrome, HeyAllergy can provide valuable support through telemedicine. With virtual consultations, you can speak to certified allergists about your symptoms and receive tailored treatment plans, such as sublingual immunotherapy (SLIT) for pollen allergies, which may reduce your sensitivity to related foods. HeyAllergy also offers convenient access to allergy testing and personalized advice to help you manage cross-reactive food allergies.