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  1. Allergies - Symptoms and causes - Mayo Clinic

    Aug 24, 2024 · Allergic reactions vary from person to person. They can range from minor irritation to a life-threatening emergency called anaphylaxis. While most allergies can't be cured, …

  2. Respiratory syncytial virus vaccine (intramuscular route)

    Aug 1, 2025 · This vaccine may cause serious allergic reactions, including anaphylaxis, which can be life-threatening and require immediate medical attention. Tell your doctor right away if you …

  3. Meningococcal vaccine (intramuscular route)

    Apr 1, 2025 · Description Meningococcal vaccine is an active immunizing agent used to prevent infection caused by certain groups (A, B, C, W, and Y) of meningococcal bacteria (Neisseria …

  4. Lisinopril (oral route) - Side effects & dosage - Mayo Clinic

    Dec 1, 2025 · This medicine may cause serious types of allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention.

  5. Pneumococcal 20-valent conjugate vaccine (intramuscular route)

    Mar 1, 2025 · Description Pneumococcal 20-valent conjugate vaccine is an active immunizing agent used to prevent infection caused by certain types of pneumococcal bacteria …

  6. Penicillin allergy - Diagnosis & treatment - Mayo Clinic

    Sep 20, 2025 · Understand the importance of an accurate diagnosis for this type of allergy and the best practices for antibiotic treatment.

  7. Drug allergy - Symptoms and causes - Mayo Clinic

    Nov 9, 2024 · Overview A drug allergy is the reaction of the immune system to a medicine. Any medicine — over-the-counter, prescription or herbal — can trigger a drug allergy. However, a …

  8. Shellfish allergy - Symptoms and causes - Mayo Clinic

    Jul 2, 2024 · Reactions range from mild symptoms — such as hives or a stuffy nose — to severe and even life-threatening. If you think you have shellfish allergy, talk to your health care …

  9. Monosodium glutamate, also called MSG: Is it harmful? - Mayo Clinic

    Monosodium glutamate, also called MSG, is used to make food taste better. Glutamate is a form of the amino acid glutamic acid. Both are naturally in food such as cheese, tomatoes, …

  10. Allergic Diseases - Overview - Mayo Clinic

    Jun 4, 2020 · To help people with a wide range of allergic diseases, allergy specialists at Mayo Clinic locations offer comprehensive treatment for asthma, hay fever (allergic rhinitis), food …