What is Pollen Food Syndrome?

Pollen Food Syndrome (PFS), also known as Oral Allergy Syndrome is a type of hypersensitivity reaction that affects many people, especially those with seasonal allergies like hay fever. It occurs when your immune system mistakes proteins in certain fruits, vegetables, or nuts, commonly referred to as plant-based foods, as similar to pollen.

In this animated video, we explore how these reactions happen, why they tend to cause mild irritations like itching of the mouth, lips, and throat, and why these symptoms are more common when the foods are consumed in their raw form. If you or someone you know experiences these symptoms, this video can help you understand what’s going on and offer tips to manage them effectively.

Created in association with Guy’s and St Thomas’ NHS Foundation Trust and Epsom and St Helier University Hospitals NHS Trust.