PREVIOUS QUESTION:

 

NEXT QUESTION:

 

What are symptoms of an anaphylactic reaction?

ANSWER

Anaphylaxis is a severe allergic reaction that can be deadly. It may look like a normal allergy at first. You might have a runny nose or a skin rash. But in about 30 minutes, more serious signs appear. You may have:

As many as 1 out of 5 people may have a second anaphylactic reaction within 12 hours of the first. This is called a biphasic anaphylaxis.

  • Coughing; wheezing; and pain, itching, or tightness in your chest
  • Fainting, dizziness, confusion, or weakness
  • Hives; a rash; and itchy, swollen, or red skin
  • Runny or stuffy nose and sneezing
  • Shortness of breath or trouble breathing and rapid heartbeat
  • Swollen or itchy lips or tongue
  • Swollen or itchy throat, hoarse voice, trouble swallowing, tightness in your throat
  • Vomiting, diarrhea, or cramps
  • Weak pulse, paleness

From: Allergies and Anaphylaxis WebMD Medical Reference

SOURCES:

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

American Academy of Pediatrics: "Anaphylaxis."

American College of Asthma, Allergy & Immunology: "Anaphylaxis."

Asthma and Allergy Foundation of America: "Anaphylaxis: A Severe Allergic Reaction."

Cleveland Clinic: "Anaphylaxis."

Food Allergy Research & Education: "About Anaphylaxis."

World Allergy Organization: "Anaphylaxis: Synopsis."

Reviewed by Carol DerSarkissian on June 18, 2018

SOURCES:

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

American Academy of Pediatrics: "Anaphylaxis."

American College of Asthma, Allergy & Immunology: "Anaphylaxis."

Asthma and Allergy Foundation of America: "Anaphylaxis: A Severe Allergic Reaction."

Cleveland Clinic: "Anaphylaxis."

Food Allergy Research & Education: "About Anaphylaxis."

World Allergy Organization: "Anaphylaxis: Synopsis."

Reviewed by Carol DerSarkissian on June 18, 2018

NEXT QUESTION:

How do you treat anaphylaxis?

WAS THIS ANSWER HELPFUL

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a substitute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

    This tool does not provide medical advice. See additional information.

    Other Answers On: