SummaryRead the full fact sheet
- Hay fever (allergic rhinitis) is an allergic reaction to environmental allergens such as pollens, dust mite, moulds and animal dander.
- Avoiding allergic triggers and taking appropriate treatments are the best ways to reduce the frequency of hay fever symptoms.
What is hay fever?
Most people associate hay fever with spring, when airborne grass pollens are at their peak. This is known as seasonal allergic rhinitis or spring hay fever. However, hay fever can occur at any time of the year.
When symptoms occur all year round, this is known as perennial allergic rhinitis. Perennial allergic rhinitis is usually caused by a reaction to allergens such as house dust mites, moulds, animal dander or occupational allergens.
Symptoms of hay fever
Some of the immediate signs and symptoms of hay fever include:
- runny nose
- itchy nose
- itchy, watery eyes.
In some cases, the symptoms of hay fever can be so severe that a person can’t sleep or concentrate, and may feel tired or unwell.
Hay fever is an allergic reaction
Your nose acts as a filter. The tiny hairs and mucus that line the nasal passages trap dust, pollens and other microscopic particles. A person with hay fever is to some of the particles that get trapped in the nose, such as pollen.
Managing your hay fever
Identifying the allergen/s causing the symptoms is an important part of managing hay fever. In some cases the cause may be obvious but in others your doctor will need to consider your medical history together with the results of (skin prick tests or allergen specific IgE blood tests), which may require referral to a specialist. The Australasian Society of Clinical Immunology and Allergy recommends the use of only.
- Antihistamine tablets, syrups, intranasal sprays and eye drops (non-sedating) – help to reduce symptoms (sneezing, itchy and irritating eyes). They are not as effective in controlling severe nasal blockage and dribble. The advantage of antihistamines is their flexibility, as you can take them when you have problems, and avoid them when you are well. Antihistamine eye drops can be helpful in controlling watery eyes due to allergies.
- Intranasal corticosteroid sprays (INCS) – these nasal sprays are used for people with moderate to severe symptoms and are one of the most effective treatments for allergic rhinitis. They need to be used regularly as directed to be effective. Different brands of INCS vary in strength and effectiveness, so it is important to read the labels and check details with your pharmacist or doctor.
- Combined intranasal corticosteroid and antihistamine sprays – these sprays are also useful for people with moderate to severe symptoms and offer the combined advantages of both medications.
- Decongestant nasal sprays – useful for quick relief, but should not be used for more than a few days as long-term use can damage the lining of the nose. Certain people should not use decongestants (such as those who are , or have ). Discuss with your GP or pharmacist before using these medications.
- , also known as desensitisation – some people may benefit from AIT, which exposes a person to gradually increasing amounts of an allergen to improve tolerance and reduce symptoms. This therapy may reduce the severity of hay fever symptoms. AIT should only be conducted under supervision of a clinical immunology/allergy specialist.
Suggestions to reduce symptoms
To prevent or limit symptoms of hay fever, minimise exposure to known allergens.
House dust mite minimisation:
- Wash sheets, pillow cases and other bedding weekly in hot water.
- Cover mattress, pillow and quilt with dust mite resistant covers.
- Remove sheepskins or woollen underlays from the bed and bedroom.
- Remove soft toys from the bedroom.
Pet dander minimisation:
- Ensure pets are kept out of bedrooms.
- Keep pets outside.
- Remove visible mould by cleaning with bleach or other mould reduction cleaners.
- Ensure adequate natural ventilation, including extractor fans.
- Avoid working with garden compost, mulch or mowing lawns.
- Remain indoors (when possible) during pollen seasons, particularly on windy days or after thunderstorms.
- Avoid activities known to cause exposure to pollen, such as mowing grass.
- Shower after outdoor activities where exposure to pollen is high.
- Use re-circulated air in the car when pollen levels are high.
- Wear sunglasses (reduces amount of pollen that gets into eyes).
- Dry bedding and clothing inside or in a tumble dryer.
Staying informed about pollen counts
Figure 1: Pollen counters operated by Melbourne Pollen and Deakin AirWatch.
Hay fever and thunderstorm asthma
People with hay fever, especially those who experience wheezing or coughing with hay fever, may be at increased risk of epidemic thunderstorm asthma. Epidemic thunderstorm asthma can be sudden, serious and even life-threatening.
Having good control of your hay fever can help reduce your risk of thunderstorm asthma.
Watch our video about hay fever and thunderstorm asthma.