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Anaphylaxis causes the immune system to release a flood of chemicals that can cause you to go into shock — blood pressure drops suddenly and the airways narrow, blocking breathing. Signs and symptoms include a rapid, weak pulse; a skin rash; and nausea and vomiting.
Symptoms. Allergy symptoms depend on what allergen is involved. The symptoms can affect the airways, sinuses and nasal passages, skin, and digestive system. Allergic reactions can range from mild to severe. Sometimes, allergies can trigger a life-threatening reaction known as anaphylaxis. Hay fever, also called allergic rhinitis, can cause ...
If you're with someone who's having an allergic reaction and shows signs of shock, act fast. Look for pale, cool and clammy skin; a weak, rapid pulse; trouble breathing; confusion; and loss of consciousness. Do the following immediately: Call 911 or emergency medical help.
In some people, a food allergy can trigger a severe allergic reaction called anaphylaxis. This can cause life-threatening symptoms, including: Constriction and tightening of the airways. A swollen throat or the sensation of a lump in your throat that makes it hard to breathe. Shock with a severe drop in blood pressure.
Anaphylaxis. Allergies can cause a severe, potentially life-threatening allergic reaction known as anaphylaxis. It can occur within seconds to minutes after exposure to something you're allergic to — and worsens quickly. An anaphylactic reaction to shellfish is a medical emergency.
Symptoms. Symptoms of anaphylaxis include: Skin reactions, including hives, itching, and skin that becomes flushed or changes color. Swelling of the face, eyes, lips or throat. Narrowing of the airways, leading to wheezing and trouble breathing or swallowing. A weak and rapid pulse. Nausea, vomiting or diarrhea.
Anaphylaxis. Anaphylaxis is a rare, life-threatening drug allergy reaction that causes widespread changes in the way body systems function. Symptoms of anaphylaxis include: Tightening of the airways and throat, causing trouble breathing. Nausea or belly cramps. Vomiting or diarrhea.
Symptoms include those of a moderate reaction as well as nausea, vomiting, diarrhea, fever and lightheadedness. When to see a doctor. Call 911 or seek immediate care for: A severe reaction to a bee sting that suggests anaphylaxis, even if it's just one or two symptoms.
Anaphylaxis is a rare, life-threatening allergic reaction that causes the widespread dysfunction of body systems. Signs and symptoms of anaphylaxis include: Tightening of the airways and throat, causing trouble breathing. Nausea or abdominal cramps. Vomiting or diarrhea.
Anaphylaxis signs and symptoms can include: Constriction of airways. Swelling of the lips, tongue and throat that makes it hard to breathe. A severe drop in blood pressure, also known as shock. Rapid pulse. Dizziness, lightheadedness or loss of consciousness. When to see a doctor. Talk to your care team if you have had any signs or symptoms of ...