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, ...

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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Ah, spring. No matter where you live, it’s the season of renewal, sunshine, milder weather — and plenty of allergies. Those ...

Imagine a nurse, let’s call her Jill, who faces multiple scrub-ins everyday as part of her operating room role. She struggles with a rash on her hands and wrists that just won’t go away, causing both ...

CNN — (CNN) — Sniffling a bit more than usual? Welcome to spring allergy season in the Northern Hemisphere. Even if you don’t think you have allergies, it’s worth paying attention to those sniffles.

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 ...

Study finds association between skin allergies and four cancers. July 12, 2011— -- A new study suggests there could be a link between skin allergies and the risk of developing certain cancers. In ...

It's the time of year that many people dread. It's certainly not the warmer temperatures, but the seasonal allergies they suffer through when all the trees and plants explode, sending massive amounts ...

Some types of allergies can cause voice loss or laryngitis. Laryngitis typically occurs due to overuse of the voice, acid reflux, colds, flu, or infection. Laryngitis is irritation or inflammation of ...

Living with allergies can be difficult. Symptoms can mess with your day-to-day life or, in some cases, be life-threatening. Even if your allergies only show up seasonally, symptoms can impact your ...