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Anaphylaxis is a severe allergic reaction of rapid onset affecting many body systems. It is due to the release of inflammatory mediators and cytokines from mast cells and basophils, typically due to an immunologic reaction but sometimes non-immunologic mechanism.
Insect stings, food, antibiotics, and certain medicines may produce a systemic allergic response that is also called anaphylaxis; multiple organ systems can be affected, including the digestive system, the respiratory system, and the circulatory system.
Oct 2, 2021 · Anaphylaxis is a severe, life-threatening allergic reaction. It can happen seconds or minutes after you’ve been exposed to something you’re allergic to. Peanuts or bee stings are examples. In anaphylaxis, the immune system releases a flood of chemicals that can cause the body to go into shock.
Anaphylaxis happens when a person eats, breathes in, or ingests an allergen (something they are allergic to). Their immune system over-reacts. It sends out special proteins from inside certain white blood cells. These proteins can start an allergic reaction or make the reaction worse.
Oct 2, 2021 · Anaphylaxis, a severe allergic reaction, is an emergency. Learn who's at risk, what to watch for and what to do when it occurs.
An allergic response is a hypersensitive immune reaction to a substance that normally is harmless or would not cause an immune response in everyone. An allergic response may cause harmful symptoms such as itching or inflammation or tissue injury.
Oct 17, 2023 · Anaphylaxis (pronounced “an-ah-fi-LAK-sis”) is a severe allergic reaction. It can be life-threatening if you don’t get treatment right away. Food allergies are one of the main causes of anaphylaxis. Other causes include stinging insects, medications and latex.
What is anaphylaxis? Anaphylaxis, also called allergic or anaphylactic shock, is a sudden, severe and life-threatening allergic reaction that involves the whole body. The reaction is marked by constriction of the airways, leading to difficulty breathing.
May 27, 2024 · anaphylaxis, in immunology, a severe, immediate, potentially fatal systemic allergic reaction to contact with a foreign substance, or antigen, to which an individual has become sensitized. Food allergies are the most common triggers of anaphylaxis, followed by drugs and insect bites and stings.
Sep 1, 2009 · Anaphylaxis is a severe and sometimes life-threatening reaction that can develop within an hour — and sometimes within minutes or even seconds — after exposure to an allergen, a substance to which an individual's immune system has become sensitized.
