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- anaphylactic shock is a medical emergency; it is a life- threatening type
I hypersensitivity reaction.
- there is no single definition.
- generally describesd as a severe, life-threatening, generalised or systemic
- the main characteristics are rapidly developing life-threatening circulatory
collapse and airway impairment in response to an allergen to which the patient
has previously been sensitized.Usually skin and mucosal changes are associated.
In the UK it is estimated that 500,000 people have had a venom-induced anaphylactic
reaction and 220,000 people up to the age of 44 have had a nut-induced anaphylactic
- available UK estimates suggest that approximately 1 in 1333 of the population
of England has experienced anaphylaxis at some point in their lives
- there are approximately 20 deaths from anaphylaxis reported each year in
the UK, with around half the deaths being iatrogenic, although this may be
Last reviewed 04/2018