Discover how allergies can cause swollen lymph nodes, and learn to distinguish between normal immune responses and warning ...

Swelling under the eye can develop for various reasons, from mild conditions, such as allergies or blocked tear ducts, to more severe conditions, such as organ failure. If a person has swelling ...

Medically reviewed by Daniel More, MD Allergies occur when your immune system overreacts to allergens like pet dander, pollen ...

Allergies and sinus infections can cause many similar symptoms, such as nasal congestion. However, the conditions have ...

You’re not imagining things -- pollen has choked most of the U.S. in an unusually intense spring allergy season this year ...

So, if you want to enjoy some of what spring has to offer in Louisiana without feeling like total garbage, here are some ...

Allergy season is starting earlier and lasting longer, leaving millions of Americans dealing with sneezing, congestion and ...

To best combat this daily opponent, you can purchase several over-the-counter antihistamines in pills, chewable tablets, and ...