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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How to use an adrenaline autoinjector (EpiPen)

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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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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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.

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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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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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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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Snake bites

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.

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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 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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Egg allergy

Egg allergy usually starts in infancy, but most children grow out of it. Learn about the symptoms and diagnosis of egg allergy, plus ways to avoid egg.

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Adrenaline

Adrenaline (epinephrine) is a hormone that helps you react more quickly in a stressful situation. Adrenaline is also used as an emergency treatment for a severe allergic reaction (anaphylaxis). Learn more here.

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Summer skin rashes

Summer rashes can be caused by things like sunlight, insects, sweating and overheating - especially if you have allergies and/or pre-existing skin conditions.

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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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Penicillin

Penicillin is the name given to a widely-used group of antibiotic drugs. Penicillin can have side-effects, and some people suffer allergic reactions. Find out more here.

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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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Antihistamines

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

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Sea creature bites and stings

Not sure if a bite or sting from a sea creature is dangerous? Here’s information about first aid treatments for jellyfish stings, sea snake bites and more.

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Symptoms of serious illness in babies and children

If your child has a serious illness, it’s important to get medical attention quickly. Learn how to recognise the symptoms and what to do.

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Spider bites

Bitten by a spider? Not sure what to do? This article explains the best first aid treatment depending on the type of spider involved.

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Lactose intolerance

Lactose intolerance is the inability to digest lactose, the sugar found in milk and milk products. Learn more about causes, symptoms and treatment options.

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Food allergies in children

Does your family have a history of eczema, asthma, hay fever or food allergies? Learn about food allergies in children and how to spot a reaction.

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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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Allergic reactions to cow's milk

About 1 in 50 infants has an allergic reaction to cow’s milk. Learn more here about allergy to milk proteins.

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Asthma symptoms

When asthma symptoms get significantly worse, this is known as an “asthma attack”. Find out about asthma symptoms.

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Chickenpox prevention

Chickenpox is a mild and common childhood illness, but can also occur in adults. Here’s how to prevent the condition.

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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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Symptom Checker

Not feeling well? Use the healthdirect Symptom Checker to better understand your symptoms and get advice on when to seek medical attention.

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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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