Overview
Symptoms
Risk factors
Related questions
Overview
Symptoms
Risk factors
Related questions
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Anaphylaxis
Anaphylaxis is a severe, whole-body allergic reaction to a chemical that has become an allergen. After being exposed to a substance such as bee sting venom, the person's immune system becomes sensitized to it.
When the person is exposed to that allergen again, an allergic reaction may occur. Anaphylaxis happens quickly after the exposure, is severe, and involves the whole body.
Is a type of:Shock
How long it usually lasts:
Short-term (lasts days to weeks)
How common is it?
Rare
Rare | Extremely rare | Very rare | Rare | Common | Very common |
| Baby0-2 | Very common | ||||
| Preteen6-13 | Very common | ||||
| Teenager14-18 | Very common | ||||
| Young adult19-40 | Very common | ||||
| Middle-aged adult41-60 | Very common |
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Risk factors
Personal
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