
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, …
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 …
Meningococcal vaccine (intramuscular route) - Mayo Clinic
Apr 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 …
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 …
Food allergy - Symptoms and causes - Mayo Clinic
Aug 30, 2024 · Food intolerance and other reactions A food intolerance or a reaction to another substance you ate may cause the same symptoms as a food allergy does — such as nausea, …
Mold allergy - Symptoms & causes - Mayo Clinic
Aug 11, 2025 · In some people, a mold allergy is linked to asthma. If mold allergy is linked to asthma, mold exposure can cause restricted breathing and other airway symptoms. If you …
Milk thistle - Mayo Clinic
May 21, 2025 · Milk thistle is a plant named for the white veins on its large prickly leaves. One of the active ingredients in milk thistle called silymarin is extracted from the plant's seeds. …
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, …
Egg allergy - Symptoms & causes - Mayo Clinic
Aug 11, 2025 · Egg allergy symptoms vary from person to person. They usually happen soon after eating an egg or a food made with egg. Egg allergy symptoms can include: Skin swelling …
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 …