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Patients & Consumers Conditions En Español Find an Allergist / Immunologist Just for Kids New Research Parent Resources Pollen Levels Publications Real Life Stories Request a Speaker School Tools Seniors The Virtual Allergist™ Treatments Videos Search by Condition (A-Z) Search by Topic Allergy & Asthma Issues Educational Brochures Elements of Allergy and Asthma Order Public Education Materials Wall Street Journal Washington Post Supplement Allergy Shots Drug Guide LABAs Sublingual Immunotherapy (SLIT)		Allergic Conditions: 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 Tips to Remember: What is Anaphylaxis? Visit an allergist/immunologist to learn more about allergic disease and your own medical condition. To find an allergist/immunologist near you, use the AAAAI's online Physician Referral Directory.
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