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Five Greatest Australian Hay Fever Culprits

Woman sneezing with tissue in meadow

Hay fever is an allergic reaction to certain airborne allergens that impacts the respiratory system. In Australia, roughly 4.5 million people – about 20 percent of the population – suffer from the ailment.


The symptoms that hay fever sufferers experience include itchy throat, sneezing, watery eyes, and a runny nose. If there was recently a rainstorm or thunderstorm, you need to be particularly careful because there will be more allergens in the air that could trigger an asthma attack.

Hay fever most commonly occurs is summer and spring. These are the times when pollen is most active in the air, causing allergic reactions in certain people who inhale it into their lungs.


The symptoms of an allergic reaction are caused when histamine and other mediators in the body are released by your inflammatory cells. If your lower airways become affected, then you will have trouble breathing.

To understand the triggers of hay fever more clearly, below is a list of the allergens Australians need to be on the lookout for the most.

Home Dust and Mites

Home dust exists in virtually every house. There are several compounds, both inorganic and organic, that make up these dust particles.


Depending on the condition of your interior and how well you keep it dry and clean, you could find a plethora of harmful airborne compounds that can cause hay fever, including smoke, hair, pollen grains, mould spores and dirt particles.  

However, what you must be concerned about the most are dust mites. These mites inhabit lots of dark organic materials, including upholstery, carpets, mattresses and pillows. You will experience an increase in dust mites when it is humid outside.

Pet Dander

Australians love their household pets, particularly dogs and cats. Although these animals may be loving, their fur contains allergens like dander and flea excrement that could become airborne at any moment. They also could stay airborne too for extended periods of time.


If you inhale these allergens, you could suffer from hay fever or another allergic reaction. Therefore, try to groom your pets as often as is healthy to them and keep their hair short.


Australia is certainly known for its beautiful and vast vegetation. Unfortunately, its flowers, trees and grasses produce a variety of different pollens. Mother Nature allows pollen to be transported between flowers primarily by wind.


The climate and temperature of your geographical location will determine how much pollen is in the air at different times of year.  

Fungal Spores

If your indoor environment is very damp and moist, then you have a breeding ground for mould spores. Be sure to keep your indoor environment insulated and at a cool temperature at all times.


Also, don’t leave water on the floor or counters in your kitchen and bathroom, and don’t ignore wet carpets or laundry.

Asthma Thunderstorms

The term “asthma thunderstorm” is used to describe the powerful winds of thunderstorms and how they carry an abundance of pollens and allergens in the air. All these particles get blown over long distances and will intensify the symptoms of hay fever if you breathe them in at once.


You’ll have a mixture of tree pollen, grass pollen, mould spores, and other allergens that could easily cause you to have asthma, even if you never knew you had it.