Grass allergy

Key facts Grass allergy is when a person experiences symptoms of allergic rhinitis (hay fever) or thunderstorm asthma after exposure to grass pollen. Allergic rhinitis caused by grass allergy can cause itchy eyes and throat, a runny nose and sneezing. You are more likely to be exposed to pollen and experience symptoms of grass allergy at certain times of the year. The pollen season will depend on where you live. People who have asthma may find that pollen triggers a flare-up. This is called thunderstorm asthma. There are many strategies you can use to reduce the chance of symptoms, and