Seasonal allergies are incredibly common, and yet they often don’t get the same level of attention or consideration as a cold or flu. “Oh, it’s just allergies!” we exclaim to a friend or coworker when ...

Allergic reactions are a serious condition many Americans face due to an abnormal immune response in the body that, in some cases, can result in death. An allergic reaction occurs when the immune ...

What Is a Peanut Allergy? You have a peanut allergy when your body’s immune system overreacts to peanuts. Normally, your immune system helps protect you from germs and other harmful substances. But if ...

Seasonal allergies happen when your body's immune system overreacts to ordinarily harmless things in the environment, like pollen. This overreaction can cause symptoms such as sneezing, a runny nose, ...

Allergic conjunctivitis is not contagious, but other types of conjunctivitis, such as viral or bacterial, are. People can take steps to prevent transmission of the contagious types. These steps ...

A penicillin allergy can cause symptoms such as hives, shortness of breath, and areas of swelling. In some cases, it may also lead to anaphylaxis, a life threatening condition that causes low blood ...

Allergy sufferers may one day be able to erase the source of their congestion, itchy skin and swollen lips and throat thanks to two studies that have uncovered elusive immune cells that maintain ...

Researchers have identified an allergy pathway that, when blocked, unleashes antitumor immunity in mouse models of non-small cell lung cancer (NSCLC). And in an early parallel study in humans, ...

Allergy immunotherapy is a long-term treatment for chronic allergies that reduces sensitivity to allergens (substances that cause an allergic reaction) by gradually exposing the immune system to doses ...

What Is a Sesame Allergy? A sesame allergy is a food allergy to sesame seeds or sesame oil, which come from the sesame plant. When you have this allergy, your immune system reacts to sesame as though ...

Kate Lecker is a 43-year-old regional business director for a pharmaceutical company. She has been using insulin for 40 years to treat her type 1 diabetes. She started having severe allergic reactions ...