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.
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 natural stress hormone. It is also a medicine used in an emergency for severe allergic reactions (anaphylaxis).
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.
Allergies to tree nuts and peanuts are a common cause of severe allergic reactions. Find out more here about managing nut allergies.
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.
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.
About 100 Australian snakes are venomous, but only 12 are likely to inflict a fatal bite. Learn about first aid for snake bites.