Discussion
Which of the following is most likely to produce anaphylaxis in a susceptible individual?
Answer: D
Correct answer: Bee sting
Injected allergen is the danger. Venom entering the bloodstream directly can trigger mast cell degranulation throughout the body within minutes, causing the collapse in blood pressure and the airway swelling of anaphylaxis. Pollen, mould and dust are inhaled, and typically cause a local reaction - rhinitis or asthma - rather than a systemic one.
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