Apples, Pollen, and Itchy Mouths: Solving the PFAS Puzzle

“It's important to recognize that fresh fruits and vegetables can cause local reactions in the mouth and gut. But if they're not causing symptoms of a more severe allergic reaction, don't panic. Chances are good that this is not something that's going to lead to more worrisome features.”  -- Dr. Anne EllisDr. Mariam Hanna sits down with Dr. Anne Ellis, professor of medicine and chair of the Division of Allergy and Immunology at Queen's University, to explore the intricacies of Pollen Food Allergy Syndrome (PFAS), also known as Oral Allergy Syndrome. Dr. Ellis, a leading expert in allergic diseases, guides listeners through the complex landscape of PFAS, offering insights into diagnosis, management, and patient care.On this episode:Understanding Pollen Food Allergy Syndrome:Dr. Ellis provides a comprehensive overview of PFAS, explaining how it affects primarily the mouth and tongue but can impact the entire GI tract. She discusses the common allergens associated with PFAS, such as birch pollen, and the cross-reactivity from fruits like apples and tree nuts.Diagnosis and Misconceptions:Explore the diagnostic process for PFAS. Dr. Ellis clarifies the difference between PFAS and other food allergies, emphasizing the role of accurate diagnosis through skin tests and serum-specific IgE testing.Management Strategies:Learn about effective management strategies for PFAS. Dr. Ellis shares insights on how to reduce symptoms through avoidance of raw fruits and vegetables and the role of immunotherapy in treating underlying environmental allergies.Patient Care and Red Flags:Dr. Ellis highlights key aspects of patient history that may indicate more severe allergic reactions, discussing the importance of distinguishing between local symptoms and systemic IgE-mediated reactions.Advice for Primary Care Providers:Gain valuable tips for primary care providers on recognizing and managing PFAS. Dr. Ellis emphasizes the significance of a detailed medical history and the reassurance that most PFAS cases do not require an epinephrine auto-injector.Tune in to this episode for an in-depth discussion on Pollen Food Allergy Syndrome, offering practical advice and expert insights for both healthcare providers and patients.Have an idea for the show or a comment, send us a text!Visit the Canadian Society of Allergy and Clinical ImmunologyFind an allergist using our helpful toolFind Dr. Hanna on X, previously Twitter, @PedsAllergyDoc or CSACI @CSACI_caThe Allergist is produced for CSACI by PodCraft Productions