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What happens during anaphylaxis?

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During anaphylaxis, your airways narrow and your throat swells. This can make it hard to breathe. Your blood vessels widen, which makes your blood pressure fall, sometimes to dangerous levels.

Anaphylactic reactions usually happen fast. Symptoms often become the most serious within 3-30 minutes of exposure to the trigger. Quicker reactions are usually more severe.

SOURCES:

CDC: "Food Allergy Among U.S. Children: Trends in Prevalence and Hospitalizations."

American Academy of Allergy Asthma & Immunology: "Allergy Statistics."

American Academy of Allergy Asthma & Immunology: "Anaphylaxis."

Krouse, J., Derebery, M., Chadwick, S. . 1st ed., Saunders Elsevier, 2007. Managing the Allergic Patient

Rudders, S. , April 2010. Pediatrics

World Allergy Organization: "Anaphylaxis."

Reviewed by Roy Benaroch on October 11, 2017

SOURCES:

CDC: "Food Allergy Among U.S. Children: Trends in Prevalence and Hospitalizations."

American Academy of Allergy Asthma & Immunology: "Allergy Statistics."

American Academy of Allergy Asthma & Immunology: "Anaphylaxis."

Krouse, J., Derebery, M., Chadwick, S. . 1st ed., Saunders Elsevier, 2007. Managing the Allergic Patient

Rudders, S. , April 2010. Pediatrics

World Allergy Organization: "Anaphylaxis."

Reviewed by Roy Benaroch on October 11, 2017

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What are the symptoms of anaphylaxis?

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