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, treatments can …

Oct 24, 2025 · Find out about the COVID-19 vaccines, the benefits of a COVID-19 vaccination, the possible side effects and how to prevent infection.

Jun 21, 2025 · Overview A blood transfusion is a common procedure for receiving donated blood or components of blood. The blood is delivered through a narrow tube placed within a vein. A blood …

People who have a sulfa allergy can react to antibiotics and other medicines that contain a chemical called sulfonamide (suhl-FON-uh-mide). A number of antibiotics containing sulfonamides can trigger …

Jan 17, 2025 · General anesthesia brings on a sleep-like state with the use of a combination of medicines. The medicines, known as anesthetics, are given before and during surgery or other …

Mar 28, 2025 · Allergy medicines are available as pills, liquids, inhalers, nasal sprays, eye drops, skin creams and shots, also called injections. Many allergy medicines are available without a prescription. …

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

May 2, 2024 · Contact dermatitis is an itchy rash caused by direct contact with a substance or an allergic reaction to it. The rash isn't contagious, but it can be very uncomfortable. Many substances can …

Jan 25, 2025 · People who need to get donor red blood cells right away, called an emergency transfusion, most often get blood group type O blood. This type of blood has the lowest risk of …

Jan 5, 2024 · Bedbugs are small, reddish-brown blood-sucking, wingless insects. Bedbug bites usually clear up without treatment in a week or two. Bedbugs aren't known to spread disease, but they can …