Immune system

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.

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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.

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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.

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Allergies

Trusted information about allergy types, as well as allergy testing, anaphylaxis, antihistamines and common related conditions such as asthma and hay fever.

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Hives

Hives is a skin rash that is often triggered by an infection or allergy. Learn to recognise symptoms.

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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.

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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.

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Anaphylaxis

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.

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Allergy testing

Suffering from asthma or hay fever? They may be triggered by allergies. Find out more here about allergy testing.

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Antihistamines

Antihistamine medications help ease allergy symptoms. Read more about how they're used to treat conditions like hay fever and asthma.

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Perfume stinks: how fragrances can affect your health

Fragrances and fragranced products cause health problems, such as asthma and headaches, in 1 in 3 people. Find out what you can do if you experience symptoms.

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Grass allergy

Grass allergy causes someone to have an allergic reaction to grass pollen spread by the wind. Learn more about its symptoms, diagnosis and treatment.

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Allergies to seafood

Seafood allergy is complex, and 4-in-5 people will have it for life. Find out more about the symptoms and diagnosis of seafood and fish allergy.

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Myasthenia gravis

Myasthenia gravis is an autoimmune disease of the neuromuscular system that causes muscle weakness. Learn about its symptoms, diagnosis and treatment.

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Overview of autoimmune diseases

Autoimmune diseases occur when the immune system attacks its own body. Learn more about the diagnosis and treatment of types such as Coeliac disease and lupus.

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Nut allergies

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.

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Antiphospholipid syndrome (APS)

Antiphospholipid syndrome (APS) is a blood disorder that increases the risk of developing blood clots or having problems during pregnancy. Learn more here.

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Pollen allergy

If you have pollen allergy, you may experience hay fever and asthma symptoms. Get tips on how to help manage your exposure to pollen.

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Tracheostomy

A tracheostomy is performed to create a small opening in the front of the neck into the windpipe to allow breathing through the throat.

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Cat and dog allergy

Allergies to cats and dogs are common, and symptoms can be severe. Learn more about how to live with a pet allergy.

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Stinging plants

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.

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Food allergies

Some people have an allergic reaction to a normally harmless ingredient or type of food. This immune system response can range from mild to severe.

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Thunderstorm asthma

Thunderstorm asthma is triggered by a combination of thunderstorms and a high pollen count. Even people who’ve never had asthma can experience it.

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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.

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Dust mites

Dust mites are tiny, spider-like creatures that feed on dust, pollen and fungal spores. Here's what to do if they trigger allergy symptoms.

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What's the difference between food allergy and intolerance — and other health concepts?

Wonder why psychiatrists and psychologists are different? Did you know that prebiotics and probiotics are not the same? Learn the differences between those things, and more.

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Allergen immunotherapy

Allergen immunotherapy is a treatment that can stop allergies from functioning. That way, you may be able to tolerate the substance you are allergic to with fewer symptoms. Learn more about allergen immunotherapy here.

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Itchy eyes

Itchy eyes are usually caused by an allergy or by dry eye syndrome. There are things you can do to treat and prevent itchy eyes. Read more on the causes here.

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Lupus

Lupus is a disease of the body’s immune system. Although its causes are not yet entirely known, lupus treatments are available.

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Multiple sclerosis (MS)

Multiple sclerosis (MS) is a chronic disease that affects the central nervous system. Learn about the types of MS and how the symptoms can be managed.

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