Immune system

Your body's immune system is designed to protect you from, or get rid of, infection. Learn more about how the immune system works.

Read more

Autoimmune conditions

Autoimmune diseases strike when the immune system attacks healthy cells in the body. Read about the causes, symptoms and treatment options.

Read more

Allergies

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

Read more

Connective tissue diseases

Connective tissue diseases can affect many different areas of the body and the immune system, caused by single gene mutations or inflammation. Learn more here.

Read more

A guide to hay fever

Hay fever, or allergic rhinitis, can be triggered by dust, grass and pollen. Learn about antihistamine medicines and other ways to manage symptoms, plus find out when an allergy test might be a good idea.

Read more

Myasthenia gravis

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

Read more

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.

Read more

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.

Read more

Anaphylaxis

Anaphylaxis is a severe allergic reaction and can be fatal. Explore triggers, symptoms, treatment and what to do in an emergency.

Read more

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.

Read more

Raynaud's phenomenon

Read about Raynaud's phenomenon, where parts of your body (often the fingers) change colour and feel numb and cool when you get cold or stressed.

Read more

Guillain-Barre syndrome

Guillain-Barre syndrome is an autoimmune disease that causes weakness, numbness or paralysis. Learn more about its symptoms, diagnosis and treatment options.

Read more

Allergies and hypersensitivities

An allergic reaction occurs when the immune system overreacts to a substance. Find out about common allergies, their symptoms and treatments.

Read more

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.

Read more

Dust mites

Dust mites are tiny creatures that live in your house, feeding on dust. Learn more about what you can do if they trigger allergy symptoms.

Read more

Autoimmune diseases — an overview

Autoimmune diseases occur when your immune system attacks your own body. Learn more about the diagnosis and treatment of these diseases.

Read more

Adrenaline

Adrenaline (epinephrine) is a natural stress hormone. It is also a medicine used in an emergency for severe allergic reactions (anaphylaxis).

Read more

Allergen immunotherapy

Allergen immunotherapy involves taking gradually increasing doses of allergen extracts over time to treat allergies. Read on to learn more.

Read more

Lupus

Lupus is a disease where your immune system attacks your own normal cells. Its cause is not yet entirely understood, but treatments are available.

Read more

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.

Read more

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.

Read more

Itchy eyes

Itchy eyes are often caused by an allergy or dry eye syndrome. Read more about what causes itchy eyes and what you can do to treat and prevent them.

Read more

Cat and dog allergy

Allergies to pets are common, particularly cats and dogs. Symptoms can range from mild to severe. Learn more about how to live with a pet allergy.

Read more

Antiphospholipid syndrome (APS)

Antiphospholipid syndrome (APS) is a blood disorder that increases the risk of blood clots and pregnancy complications. Learn more here.

Read more

Hives (urticaria)

Hives is a skin rash that may be triggered by an infection or allergy. Learn more about hives rash (urticaria) it’s causes, symptoms and treatment.

Read more

Thunderstorm asthma

Thunderstorm asthma happens when there are thunderstorms and a high pollen count. Learn more about its symptoms and treatment options.

Read more

Nut allergies

Allergies to tree nuts and peanuts are a common cause of severe allergic reactions. Find out more here about managing nut allergies.

Read more

Allergies to seafood

Seafood allergy is complex, and most people don’t grow out of it. Find out more about the symptoms and diagnosis of seafood and fish allergy.

Read more

Allergic reactions to cow's milk

Allergic reactions to cow’s milk are very common. It is seen in about 1 in 50 infants. Learn more here about allergy to milk proteins.

Read more

Stinging plants

Stinging trees and nettles can hurt. Find out what these plants look like, how to avoid getting stung and what to do when the worst happens.

Read more