Anaphylaxis - Symptoms & causes - Mayo Clinic
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 - Diagnosis & treatment - Mayo Clinic
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.
Allergies - Symptoms and causes - Mayo Clinic
Aug 24, 2024 · Some types of allergies can trigger a severe reaction known as anaphylaxis. Certain foods, insect stings and medicines are among the allergens that can set off this life-threatening emergency. Anaphylaxis can cause you to go into shock. Other symptoms include: Passing out. A drop in blood pressure. Severe shortness of breath and throat tightness.
Anaphylaxis: First aid - Mayo Clinic
Jun 18, 2024 · If you're with someone having an allergic reaction with signs of anaphylaxis, call 911 or your local medical emergency number right away. Don't wait to see whether symptoms get better. Seek emergency treatment right away. Severe untreated anaphylaxis can lead to death within half an hour.
Allergies - Diagnosis and treatment - Mayo Clinic
Aug 24, 2024 · If you have a severe allergy, you might need to carry an emergency epinephrine shot at all times. An epinephrine shot (Auvi-Q, EpiPen, others) can ease symptoms of a severe allergic reaction until you get emergency treatment.
Food allergy - Symptoms and causes - Mayo Clinic
Aug 30, 2024 · 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. Rapid pulse.
Drug allergy - Symptoms and causes - Mayo Clinic
Nov 9, 2024 · The most common symptoms of drug allergy are hives, rash and fever. But a drug allergy also may cause serious reactions. This includes a severe, life-threatening condition known as anaphylaxis.
Bee sting - Symptoms and causes - Mayo Clinic
Oct 24, 2024 · Bee sting symptoms can range from pain and swelling to a life-threatening allergic reaction. Having one type of reaction doesn't mean you'll always have the same reaction every time you're stung or that the next reaction will be more severe.
Penicillin allergy - Symptoms & causes - Mayo Clinic
Sep 29, 2021 · Common signs and symptoms of penicillin allergy include hives, rash and itching. Severe reactions include anaphylaxis, a life-threatening condition that affects multiple body systems. Research has shown that penicillin allergies may be over-reported — a problem that can result in the use of less-appropriate and more-expensive antibiotic ...
Food allergy - Diagnosis and treatment - Mayo Clinic
Aug 30, 2024 · However, antihistamines can't treat a severe allergic reaction. For a severe allergic reaction, you may need an emergency injection of epinephrine and a trip to the emergency room. Many people with allergies carry an epinephrine autoinjector (Adrenaclick, EpiPen).