Our Symptom checker provides clinical advice on what to do next based on your symptoms.
Anaphylaxis is very serious and can even be fatal. See here for the symptoms to look out for 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.
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.
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.
Allergic reactions to antibiotics
Some people have an allergic reaction to antibiotics. Learn about the symptoms and the difference between allergic reactions and side effects.
Allergies and hypersensitivities
An allergic reaction occurs when the immune system overreacts to a foreign substance that usually causes few or no problems in most people.
Bitten by a spider? Not sure what to do? This article explains the best first aid treatment depending on the type of spider involved.
About 100 Australian snakes are venomous. Although only 12 are likely to inflict a wound that could kill you. Learn about first aid for snake bites.
It can be difficult to know if a sting from a plant is dangerous or not. This article explains the best first aid treatment depending on the plant involved.