Grass pollen season brings a seasonal increase in asthma and hay fever. It also brings the chance of epidemic thunderstorm asthma.
Epidemic thunderstorm asthma events are thought to be triggered by a unique combination of high grass pollen levels and a certain type of thunderstorm with strong winds, causing a large number of people to develop asthma symptoms over a short period of time. Epidemic thunderstorm asthma events don't happen every year but when they do, they happen during grass pollen season, which is normally from October through December.
Data from thunderstorm asthma epidemics suggest that the risk of asthma triggered by the particular thunderstorm is highest in adults who are sensitised to grass pollen and have seasonal allergic rhinitis (with or without known asthma). The worst outcomes are seen in people with poorly controlled asthma.
The Department of Health and Human Services’ thunderstorm asthma campaign resources, including posters and a brochure, are available in 15 languages and can be downloaded from the Health.Vic website campaign toolkit. Alternatively, they can be ordered at no cost using the link to the online order form on the toolkit page.
For further information, visit the Epidemic thunderstorm asthma webpage.
*Inclusion does not imply RACGP endorsement.