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Why do allergic reactions happen?

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During an allergice reaction, your immune system releases antibodies. These are proteins that deliver a message to cells to send out histamine and other chemicals that trigger allergy symptoms.

From: What Is an Allergic Reaction? WebMD Medical Reference

SOURCES:

Asthma and Allergy Foundation of America: “Allergy Facts and Figures.”

American Academy of Allergy, Asthma & Immunology: “Allergic Reactions,” “Anaphylaxis.”

University of Maryland Medical Center: “Allergic Reactions.”

Mayo Clinic: “Allergies.”

Cleveland Clinic: “Allergy Overview.”

Reviewed by Nayana Ambardekar on March 21, 2018

SOURCES:

Asthma and Allergy Foundation of America: “Allergy Facts and Figures.”

American Academy of Allergy, Asthma & Immunology: “Allergic Reactions,” “Anaphylaxis.”

University of Maryland Medical Center: “Allergic Reactions.”

Mayo Clinic: “Allergies.”

Cleveland Clinic: “Allergy Overview.”

Reviewed by Nayana Ambardekar on March 21, 2018

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What things most often cause an allergy attack?

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