Allergies

One bite from a lone star tick might have you eating veggie burgers for life.

By Jesslyn Shields

What's to blame? What else? Climate change.

By Yingxiao Zhang & Allison L. Steiner

Spring is here, your pollen allergies have kicked in and you feel tired and sleepy. Could pollen have something to do with it? Or is it just the meds?

By Kathryn Whitbourne

Spring may be beautiful, but it's a tough time of year for anybody with allergies. That's why they rely on the daily pollen count for relief.

By Carrie Whitney, Ph.D.

A new study showed that about 10 percent of Americans who thought they had food allergies actually had food intolerance issues. So what's the difference?

By Dave Roos

If you have to carry an EpiPen, you might leave one in your car. But what if it freezes during the colder months? Is it still good in case of emergency?

By Michelle Konstantinovsky

Your body never freaked out before when you were stung by a bee. And yet one day, you have an anaphylactic reaction to a bee sting. What's the deal?

By Jesslyn Shields

Nearly half of all U.S. adults who have food allergies developed at least one of them during adulthood.

By Jesslyn Shields

It's called oral allergy syndrome, and it's caused when the immune system freaks out and overreacts to allergens.

By Shelley Danzy

If you're moving from one city to another, pack some extra tissues because it's true: Seasonal allergies can flare up when you relocate and are exposed to new allergens.

By John Perritano

Contradicting earlier advice, the study found that introducing these foods earlier is better.

By Melanie Radzicki McManus

There may be more going on with your body than just itchy eyes and a runny nose when you're dealing with seasonal allergies, a small new study finds.

By Kate Kershner

People with non-celiac wheat sensitivity have a weakened intestinal barrier, which leads to a systemic immune response and a non-gluten protein may be to blame.

By Jesslyn Shields

New approach to treating allergies involves hiding allergen in friendly shell so immune system doesn't attack it.

By Nichole Bazemore

Although scientists knew that birth season affected people's allergy risk, they didn’t know why this happened. A study gets us one step closer.

By Nichole Bazemore

The sixth-leading cause of chronic illness in the U.S. remains maddeningly difficult to figure out.

By John Donovan

The human body requires water to thrive, so how could one possibly be allergic to H2O? Consider the strange case of one teen who broke out in hives after swimming.

By Laurie L. Dove

With blood pumping through your body every second of the day, it seems unthinkable that this life-giving substance could be an allergen. For some people, it's not weird science — it's reality.

By Laurie L. Dove

Allergy symptoms like itchy, watery eyes aren't any fun to deal with. Could you be causing your own pain with certain patterns of behavior?

By Laurie L. Dove

Is the American wheat industry to blame for the gluten-free craze? Don't believe the hype, gluten might not be the problem you think it is.

By Bambi Turner

Sometimes life-threatening, sometimes just inconvenient, allergies won't ever win a popularity contest. While we can't eliminate them, we may be able to reduce them through a simple household trick: hand-washing the dishes!

By Karen Kirkpatrick

Some people in the anti-wheat movement say that the grain has compounds in it that make it addictive. But is this true?

By Alison Cooper

Learn how to control your allergy symptoms while traveling. No more sneezing, watery eyes and runny nose on your trips!

By Dr. Rob Danoff

An allergy to pollen is the most common seasonal allergy. Find out more about common seasonal allergies from this article.

By HowStuffWorks.com Contributors

Anaphylaxis is a life-threatening condition that can be triggered by allergies. Learn what epinephrine does for anaphylaxis in this article.

By HowStuffWorks.com Contributors