How do allergies occur? - Telfast Australia
Return to articles

How do allergies occur?

Published on April 11, 2018

How do allergies occur?

An allergy is a disorder in which the body becomes hypersensitive to a particular, normally harmless allergen. A specific reaction is then provoked whenever the allergen is inhaled, ingested or otherwise comes into contact with the person affected. Allergic rhinitis, or hayfever, is caused by an allergy to pollens from grasses, flowers, weeds or trees. This form of rhinitis causes sudden, frequent attacks of sneezing, nasal discharge and congestion.

These episodes may also be accompanied by eye symptoms, such as stinging and watering eyes. Symptoms of hayfever occur because the allergen, in this case pollens, stimulates the production of antibodies, which in turn causes cells of the immune system to release inflammatory substances. Once the body has developed antibodies to a particular foreign antigen, the same reaction will occur the next time it comes across it and the cycle of allergy symptoms continues.

For more information, ASCIA website.

Learn about which Telfast product may be appropriate for you.



Related Articles

Hayfever vs Colds

Hayfever vs the common cold: blow by blow The symptoms of hayfever can sometimes be very similar to the common…

Learn More


What are Hives? Hives (otherwise known as Urticaria) is characterised by circular red, raised and itchy welts on the surface…

Learn More

Find a Stockist

For your nearest Telfast stockist, search by entering your location:

Purchase now from selected retailers

Discount Drug Stores logo Coles

The liability of the Company or of SANOFI shall not be incurred by a third party site that can be accessed via the Site. We do not have any way of controlling the content of such third party sites which remain entirely independent of the Company. Moreover, the existence of a link between the Site and a third party site does not under any circumstances mean that the Company approves the content of that site in any way whatsoever and in particular the use that may be made of it.

Contact Us

If you’d like to know which product might be suitable for your needs, or if you have questions relating to any of our products, please fill in the form below. We’d love to hear from you. To speak with a team member or report an adverse event, please call 1800 818 806 within Australia.

Thank you for your submission. A representative will be in contact shortly.