News tagged with allergy

Related topics: children · infectious diseases · immune system · vaccine · asthma

Breast milk found to protect against food allergy

Eating allergenic foods during pregnancy can protect your child from food allergies, especially if you breastfeed, suggests new research from Boston Children's Hospital. The study, published online today in the Journal of ...

Nov 20, 2017
popularity389 comments 0

Don't let fall allergies leave you in the cold

As the cooler weather moves in, the potential for fall allergies increases. One University of Alabama at Birmingham ear, nose and throat specialist says taking the right precautions and being aware of the causes can significantly ...

Nov 17, 2017
popularity4 comments 0

What you need to know about honey bee stings

A Victorian man died yesterday after being stung by several bees. While bee sting deaths are rare (bees claim around two Australian lives each year), bees cause more hospitalisations than any venomous creature.

Nov 16, 2017
popularity0 comments 0

Allergy

Allergy is a disorder of the immune system often also referred to as atopy. Allergic reactions occur to normally harmless environmental substances known as allergens; these reactions are acquired, predictable, and rapid. Strictly, allergy is one of four forms of hypersensitivity and is called type I (or immediate) hypersensitivity. It is characterized by excessive activation of certain white blood cells called mast cells and basophils by a type of antibody known as IgE, resulting in an extreme inflammatory response. Common allergic reactions include eczema, hives, hay fever, asthma, food allergies, and reactions to the venom of stinging insects such as wasps and bees.

Mild allergies like hay fever are highly prevalent in the human population and cause symptoms such as allergic conjunctivitis, itchiness, and runny nose. Allergies can play a major role in conditions such as asthma. In some people, severe allergies to environmental or dietary allergens or to medication may result in life-threatening anaphylactic reactions and potentially death.

A variety of tests now exist to diagnose allergic conditions; these include testing the skin for responses to known allergens or analyzing the blood for the presence and levels of allergen-specific IgE. Treatments for allergies include allergen avoidance, use of anti-histamines, steroids or other oral medications, immunotherapy to desensitize the response to allergen, and targeted therapy.

This text uses material from Wikipedia, licensed under CC BY-SA

Subscribe to rss feed