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 ...

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, ...

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 ...

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 ...

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, ...

If you live in New Jersey or Pennsylvania and you suffer from allergies, it might be time to start stocking up on tissues and antihistamines. We could be in for a rough pollen season this year, ...

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 ...

A new type of vaccine may soon offer relief to those who suffer from allergies, potentially reducing the need for traditional allergy shots.

Apple allergies can occur, especially in people who are allergic to birch tree pollen. Up to 8% of children and 3% of adults may experience food allergies, including reactions to apples. The main ...