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Patients & Consumers Online Tools Find an Allergist / Immunologist Pollen Counts Diseases 101 Drug Guide Featured Resources » AAAAI Tips Brochures Topic of the Month Information Request Form Donate Now Constituencies » Patients & Consumers Contact Search by Condition (A-Z) Request a Speaker Smoke Free Homes Referral Guidelines Breakthroughs in Bioscience Other Resources En Español Just for Kids Seniors		Allergic Conditions: Anaphylaxis Anaphylaxis is the most severe form of allergic reaction. It is a rapid, immune-mediated, systemic reaction to allergens that a person has been previously exposed to. The reaction occurs rapidly and often dramatically, and is usually unanticipated. Signs and symptoms arise systemically and may include faintness, severe difficulty breathing, and throat closing. Symptoms generally start within 15 to 30 minutes from exposure to an allergen, occasionally begin after 1 hour, and rarely occur hours later. Anaphylaxis is always a medical emergency and immediate care is needed. Resources about anaphylaxis: AAAAI Patient Gallery: Anaphylaxis What is Anaphylaxis? Tip Brochure The Allergy Report – Anaphylaxis  Please visit an allergist for more information on allergic disease and your individual medical condition. If you need to locate an allergist in your area, visit the Academy’s online Physician Referral Directory. <back>
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