Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Anaphylaxis is a severe allergic reaction and can be fatal. Explore triggers, symptoms, treatment and what to do in an emergency.
How to use an adrenaline autoinjector
An adrenaline autoinjector can, in an emergency, save the life of someone who is having a severe allergic reaction (anaphylaxis). Learn how to use one here.
Trusted information about allergy types, as well as allergy testing, anaphylaxis, antihistamines and common related conditions such as asthma and hay fever.
Adrenaline (epinephrine) is a hormone that helps you react more quickly in a stressful situation. Adrenaline is also used as an emergency treatment for a severe allergic reaction (anaphylaxis). Learn more here.
Insect bites and stings
Most insect bites will clear up in a day or two, although some people can have severe allergic reactions (anaphylaxis). Learn more about insect bites and how to handle allergic reactions.
Allergies and hypersensitivities
An allergic reaction occurs when the immune system overreacts to a substance. Find out about common allergies, their symptoms and treatments.
Exposure to nuts, even in very small amounts, is a common trigger for a severe allergic reaction. Find out more here about nut allergies and how they can be managed.
Allergies can make conditions such as asthma and hayfever worse. Find out more here about different types of allergy tests and when they are useful.
Find out what you do for a spider bite in Australia. Redback spider, funnel-web spider and white tail spider bites need different first aid.
About 100 Australian snakes are venomous, but only 12 are likely to inflict a fatal bite. Learn about first aid for snake bites.