What is anaphylaxis?
Anaphylaxis is an acute allergic reaction which is the result of a hypersensitivity to an allergen. Peanuts and bee stings famously cause anaphylaxis in some people, but a wide variety of allergens can be responsible. Left untreated, anaphylaxis can be fatal, sometimes in minutes. Fortunately, this type of allergic reaction is extremely rare, and many people become aware that they are at risk of anaphylaxis before they experience an anaphylactic episode, so they are prepared. In order for anaphylaxis to occur, someone has to be exposed to the allergen at least once before. The body’s immune system develops antibodies to that substance, and when the person is exposed again, the immune system goes into hyperdrive, releasing a flood of histamines and other substances in a mistaken attempt to protect the body. A number of symptoms are associated with anaphylaxis. The most dangerous is swelling, which causes the airway to constrict. The face of the patient may also become swollen and lumpy,
Anaphylaxis is a serious allergic reaction that can be life threatening. Food is the most common cause of anaphylaxis, but insect stings, medicine, latex, or exercise can also cause a reaction. Approximately 1-2% of Canadians live with the risk of an anaphylactic reaction. More than 50% of Canadians know someone who is at risk.
