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Allergies and hypersensitivities

2-minute read

People have immune systems that recognize what is usually part of the body (blood, cells, hair etc.) and what is not (bacteria, viruses, splinters etc.). Sometimes the immune system becomes hypersensitive to chemicals from foods (peanuts, shellfish, nuts, eggs, wheat); animals (dogs, cats); and other materials (grasses, dust, dustmites, medicines).

This causes allergic reactions. For most people, the allergic reaction is hay fever (runny nose and itchy eyes) or hives (a bumpy skin rash). In some people this reaction is severe and causes anaphylaxis, which is an emergency needing immediate injection with adrenaline from an epi-pen.

The Australasian Society of Clinical Immunology and Allergy (ASCIA) recommends that for a severe allergic reaction adrenaline is the initial treatment. For further information, visit the Choosing Wisely Australia website.

Allergies can be treated with antihistamine medicines, and allergy tests might find the cause of the hypersensitivity. If so, it may be possible to have regular injections to stop the body overreacting.

ASCIA also recommends that you should speak to your doctor or specialist about the benefits and safety of allergen immunotherapy or before attempting any allergy testing or treatment. For further information, visit the Choosing Wisely Australia website.

Follow the links below to find trusted information about allergies and hypersensitivities.

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Peanut allergy is the most common serious food allergy in children. About 3 in every 100 infants are allergic to peanuts, and the prevalence seems to be rising.

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Whats the difference between food allergy and food intolerance? Food allergies and intolerances are often confused, as their symptoms can seem similar

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Sometimes proteins in some foods can cause allergic reactions. The reaction happens soon after you have had that food, usually within 2 hours. Sometimes you and your doctor can find out what you are reacting to.

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The scientific evidence does not establish that Electromagnetic Hypersensitivity (EHS) symptoms are caused by exposure to low-level electromagnetic fields.

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Foods can cause a wide variety of reactions in children. A food allergy can be life-threatening in some rare cases, but most reactions to food are less severe.

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Type II hypersensitivity reaction information | myVMC

Hypersensitivity reaction type II is also called cytotoxic reaction or antibody-dependent hypersensitivity reaction. This is its defining feature.

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Explanation of food allergies and intolerance.

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Allergy patch testing - ACD

Allergy patch testing is a process to detect contact allergy and is looking for a substance or chemical in the persons environment which may have caused or aggravated dermatitis

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