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Symptoms of Anaphylaxis
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Symptoms of anaphylaxis

Symptoms of anaphylactic shock tend to develop rapidly although the initial presentation can be delayed and/or deceptively mild.

The general initial symptoms of anaphylaxis (which occur within a few minutes to two hours of contact with the allergen) are:

Other symptoms of anaphylaxis are:

Symptoms sometime start quite mildly and can progressively get worse over a number of hours.

Biphasic anaphylaxis

In about 20% of all cases of anaphylaxis, symptoms start off quite mild, go away and then come back about 2-3 hours later with alarming severity. The second-phase symptoms occur in the respiratory tract and are usually more severe than the first-phase symptoms.


Anaphylaxis is most likely to happen if one of the following three scenarios occurs within minutes to an hour after eating a food allergen or being exposed to the allergen (insect bite etc) (adapted from Food Allergy and Anaphylaxis Network)

1. Skin symptoms or swollen lips

A person has an allergic reaction of the skin (hives, rash) or swollen lips and either the symptoms below:

2. Exposed to a suspected allergen

If a person has been exposed to an allergen and two or more of the following symptoms also occur:

3. Exposed to a known allergen

If a person was exposed to a know allergen and experiences:

Anaphylactic shock affects most body systems in a devastating way and can be fatal.


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  Last reviewed: 18 November 2007 || Last updated: 12 March 2009


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NOTE: Mega doses of any type of vitamin, mineral, amino acid or herbal supplement cannot cure illnesses and in fact can be very dangerous and produce toxic side effects and interfere with medicine you are taking. Always ensure you consult your doctor before taking any type of complementary supplements.
Disclaimer: This guide is not intended to be used for diagnostic or prescriptive purposes. For any treatment or diagnosis of illness, please see your doctor.


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