What does my eosinophil count mean?
3 Dec 2018 at 7:00pm
Eosinophils are a type of white blood cell that help the body fight off infections. The test involves a doctor drawing blood. An eosinophil count may be either too high or too low, which may indicate an underlying condition, or it may be in the normal range. Learn more about eosinophil count here.

'Breakthrough' treatment for peanut allergy awaits FDA check
19 Nov 2018 at 3:00pm
Millions of people live with peanut allergy, for which there is currently no available treatment. Thanks to a new study, though, this may soon change.

What causes lightheadedness?
16 Nov 2018 at 7:00pm
People who experience lightheadedness feel dizzy or faint. This sensation is particularly common after standing up too quickly. Learn about the other possible causes and treatment options in this article.

What is the best remedy for sinus drainage?
5 Nov 2018 at 1:00pm
The sinuses drain down the back of the throat, and issues such as allergies, infections, and colds can make the process irritating or painful. Some home remedies include nasal irrigation and steam therapy. Learn more here.

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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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