Causes Of Anaphylaxis

The immune system produces antibodies that defend against foreign substances. This is good, when a foreign substance is harmful (as some bacteria or viruses). But for some people's immune system overreacting to substances that should not cause an allergic reaction. When this happens, the immune system starts a chemical chain reaction that leads to allergy symptoms. In general, allergy symptoms are not life threatening. But some people have a severe allergic reaction that can lead to anaphylaxis. Even if you or your child has had only a mild allergic reaction to the past, there is still a risk of anaphylaxis future.

A number of allergens can trigger anaphylaxis, depending on what you are allergic.

Common triggers of anaphylaxis include:

Some medications such as penicillin

Foods such as peanuts, tree nuts (walnuts, pecans), fish, shellfish, milk and eggs

Insect stings from bees, wasps, wasps, hornets and fire ants

Less common causes of anaphylaxis include:

Latex

Muscle relaxants used in general anesthesia

Exercise

Exercise-induced anaphylaxis varies from person to person. In some people, aerobic activity like running, which caused an anaphylactic reaction. In another activity, physical less intense, such as walking, can trigger a reaction. Eating certain foods before exercise or exercise when the weather is hot, cold or wet has also been linked to anaphylaxis in some people. Talk to your doctor about precautions to take when exercising.

Symptoms of anaphylaxis are often caused by aspirin, other NSAIDs - such as ibuprofen (Advil, Motrin, others) and naproxen sodium (Aleve, Midol Extended Relief) - and intravenous (IV) is used instead of X-rays in some tests. Although similar to an allergy-induced anaphylaxis, this reaction does not trigger allergen antibodies.

If you do not know what triggers your allergy attack, your doctor may do tests to try to identify the allergen. In some cases, the cause of anaphylaxis never been identified. This is known as idiopathic anaphylaxis.