Pronounced: ANNA-fill-AX-isEn Español (Spanish Version)
Anaphylaxis is a severe, sometimes life-threatening, allergic reaction. It affects multiple organs, including the heart and lungs.
It is important to seek medical care right away if you have symptoms of anaphylaxis.
Substances that cause anaphylaxis are often called allergens or triggers. Common triggers include:
- Foods and food additives, especially eggs, peanuts, seafood, cow's milk, soy, fish, shellfish, seeds, and tree nuts
- Insect stings or bites from bees, wasps, hornets, yellow jackets, and fire ants
- Medicines (eg, antibiotics, seizure medications, muscle relaxants)
- Latex products (eg, gloves, medical tubing, condoms)
- Blood transfusion
- Some pain medicines, especially narcotics
Allergic Reaction to Medication (Hives)
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Some triggers, like dyes used in x-ray procedures, can cause a reaction similar to anaphylaxis.
Last reviewedSeptember 2013by Marcin Chwistek, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.