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  1. Anaphylaxis - Symptoms & causes - Mayo Clinic

    Apr 16, 2025 · Anaphylaxis, a severe allergic reaction, is an emergency. Learn who's at risk, what to watch for and what to do when it occurs.

  2. Anaphylaxis - Diagnosis & treatment - Mayo Clinic

    Apr 16, 2025 · Anaphylaxis, a severe allergic reaction, is an emergency. Learn who's at risk, what to watch for and what to do when it occurs.

  3. Anaphylaxis: First aid - Mayo Clinic

    Jun 18, 2024 · A life-threatening allergic reaction called anaphylaxis can cause shock, a sudden drop in blood pressure and trouble breathing. In people who have an allergy, anaphylaxis can …

  4. Allergies - Symptoms and causes - Mayo Clinic

    Aug 24, 2024 · For a severe allergic reaction, also called anaphylaxis, call 911 or your local emergency number. Or get emergency medical help. A shot of prescription medicine called …

  5. Penicillin allergy - Symptoms & causes - Mayo Clinic

    Sep 20, 2025 · It's important to understand and discuss what is an allergic reaction, what is a typical side effect and what you can tolerate in taking a medicine. Call 911 or emergency …

  6. Latex allergy - Symptoms and causes - Mayo Clinic

    Nov 6, 2024 · Latex allergy may cause itchy skin and hives or even anaphylaxis. Anaphylaxis is a possibly life-threatening condition that can cause throat swelling and serious difficulty breathing.

  7. Peanut allergy - Symptoms and causes - Mayo Clinic

    Mar 25, 2025 · Peanut allergy is the most common cause of anaphylaxis due to food. This medical emergency requires treatment with an epinephrine autoinjector (EpiPen, Auvi-Q, …

  8. Shellfish allergy - Symptoms and causes - Mayo Clinic

    Jul 2, 2024 · Some people with shellfish allergy react to all shellfish, while others react to only certain kinds. Reactions range from mild symptoms — such as hives or a stuffy nose — to …

  9. Drug allergy - Symptoms and causes - Mayo Clinic

    Nov 9, 2024 · Learn which medicines are more likely to cause an allergic reaction, what symptoms look like and what treatments can calm such a reaction.

  10. Food allergy - Symptoms and causes - Mayo Clinic

    Aug 30, 2024 · Also known as oral allergy syndrome, pollen-food allergy syndrome affects many people who have hay fever. In this condition, certain fresh fruits and vegetables or nuts and …