Banana allergy: What you need to know
10 Nov 2017 at 2:00pm
A banana allergy occurs when a person's immune system reacts to a protein in bananas, causing a variety of symptoms. Learn more in this article.

Six surprising health risks in your home
2 Nov 2017 at 5:00pm
The home is a safe haven, but are we aware of the health risks hidden in its nooks and crannies? Here we investigate the less obvious domestic hazards.

What are these white spots on my skin?
2 Nov 2017 at 11:00am
What conditions could be behind white spots appearing on the skin? This article looks at the possible causes and treatment options.

What causes an apple allergy?
1 Nov 2017 at 5:00pm
Apple allergies can be caused by a reaction to a protein within the apple or by a condition called oral allergy syndrome. Learn more in this article.

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Allergies

An allergy or Type I hypersensitivity is an immune malfunction whereby a person's body is hypersensitised to react immunologically to typically nonimmunogenic substances. When a person is hypersensitised, these substances are known as allergens. The word allergy derives from the Greek words allos meaning "other" and ergon meaning "reaction" or "reactivity". Type I hypersensitivity is characterised by excessive activation of mast cells by immunoglobulin E resulting in a systemic inflammatory response that can result in symptoms as benign as a runny nose, to life-threatening anaphylactic shock and death.

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