Your body's immune system is designed to protect you from, or get rid of, infection. Find out more about how the immune system works.
Insect bites - infographic
Explore this infographic to learn about the insects that can cause infections and allergic reactions, the symptoms and treatments you should be aware of and tips to prevent bites.
Insect stings - infographic
Explore this infographic to learn about the insects that can cause infections and allergic reactions, the symptoms and treatments you should be aware of and tips to prevent stings.
Trusted information about allergy types, as well as allergy testing, anaphylaxis, antihistamines and common related conditions such as asthma and hay fever.
Hives is a skin rash that is often triggered by an infection or allergy. Learn to recognise symptoms.
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.
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.
Suffering from asthma or hay fever? They may be triggered by allergies. Find out more here about allergy testing.
Antihistamine medications help ease allergy symptoms. Read more about how they're used to treat conditions like hay fever and asthma.