Research

Hay Fever Facts Hay fever, also known as seasonal allergic rhinitis, affects one in four people in the Whole World and is mainly caused by grass pollen. Hay fever is a type of allergy. It happens when your body makes antibodies in response to certain triggers, such as pollen. Nearly millions of people have hay fever in the whole world. It’s most common in children, particularly teenagers, but you can develop hay fever at any…