15 doctors weighed in:
What is anaphylaxis?
15 doctors weighed in

Dr. Steven Machtinger
Internal Medicine - Allergy & Immunology
7 doctors agree
In brief: Life-threatening
Anaphylaxis is a life-threatening allergic reaction involving several parts of your body.
Death occurs in about 1% of episodes caused by suffocation (your windpipe closes off) or shock (your blood pressure falls & your brain doesn't get enough oxygen). Typical symptoms include hives, vomiting, difficulty breathing & a sense of doom. Epinephrine is the drug of choice. Don't be afraid to use it!

In brief: Life-threatening
Anaphylaxis is a life-threatening allergic reaction involving several parts of your body.
Death occurs in about 1% of episodes caused by suffocation (your windpipe closes off) or shock (your blood pressure falls & your brain doesn't get enough oxygen). Typical symptoms include hives, vomiting, difficulty breathing & a sense of doom. Epinephrine is the drug of choice. Don't be afraid to use it!
Dr. Steven Machtinger
Dr. Steven Machtinger
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Dr. Eli Silver
Pediatrics
4 doctors agree
In brief: Multi-organ reaction
Anaphylaxis denotes an allergic reaction that involves two or more organ systems.
For example, hives+ vomiting (in response to an allergen) = anaphylaxis. Anaphylactic shock describes a situation where the anaphylaxis progressed to the point of organ failure. Prompt use of Epinephrine injectors could avert the progression of anaphylactic reaction toward the shock.

In brief: Multi-organ reaction
Anaphylaxis denotes an allergic reaction that involves two or more organ systems.
For example, hives+ vomiting (in response to an allergen) = anaphylaxis. Anaphylactic shock describes a situation where the anaphylaxis progressed to the point of organ failure. Prompt use of Epinephrine injectors could avert the progression of anaphylactic reaction toward the shock.
Dr. Eli Silver
Dr. Eli Silver
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Dr. Arthur Torre
Pediatrics - Allergy & Asthma
2 doctors agree
In brief: Serious allergy
Anaphylaxis is a serious allergic reaction that is rapid in onset and may even cause death typically the reaction is to a food, drug or hymenoptera (bee like insects) sting.
Symptoms include hives, difficult breathing, and shock. Anaphylaxis is treated with Epinephrine injection.

In brief: Serious allergy
Anaphylaxis is a serious allergic reaction that is rapid in onset and may even cause death typically the reaction is to a food, drug or hymenoptera (bee like insects) sting.
Symptoms include hives, difficult breathing, and shock. Anaphylaxis is treated with Epinephrine injection.
Dr. Arthur Torre
Dr. Arthur Torre
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Dr. Laura Webb
Pediatrics
1 doctor agrees
In brief: Severe reaction
This is a severe, multi-system allergic reaction.
It can be life threatening and you should immediately seek medical attention. During this reaction you can experience throat swelling, difficulty breathing and full body hives. Your blood pressure can become dangerously low. People who are at risk for this typically carry epipens (epinephrine) with them to begin to treat this reaction.

In brief: Severe reaction
This is a severe, multi-system allergic reaction.
It can be life threatening and you should immediately seek medical attention. During this reaction you can experience throat swelling, difficulty breathing and full body hives. Your blood pressure can become dangerously low. People who are at risk for this typically carry epipens (epinephrine) with them to begin to treat this reaction.
Dr. Laura Webb
Dr. Laura Webb
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