Allergies , what are people allergic to ?

Spring goes into full bloom, yet you’re in real misery. Others fight battles with certain foods, chemicals, or airborne particles. What causes these reactions?

What Are Allergies?

What Is an Allergy?

This article explains the basics of an allergic reaction. Learn what happens when your immune system goes on high alert.

Eye Allergies

People with allergies also can develop red, swollen, and itchy eyes when exposed to their allergic triggers. 

What Causes Chronic Allergies?

If you've got allergies, you might wonder what to expect in the long term. Are you stuck with allergy symptoms, or will they get better? Or could they actually get even worse?

Allergies A-Z

Are your allergies acting up? Get the facts on common allergy types.

Causes

What Causes Allergies?

Almost anything can trigger an allergy. Read this in-depth article.

Allergens: They're Everywhere

The air you breathe, whatever touches your skin, anything you put in your mouth – it’s all got potential for causing an allergy.

Nasal Polyps

Learn what nasal polyps are and their causes and treatments.

Are You at Risk?

How Bad Are Your Sinus Allergy Problems?

The Allergy & Sinus Symptom Evaluator will assess your symptoms, treatments, and medical history.

Who Gets Allergies?

You can blame heredity, but it’s not that simple. Read on to learn more.

Prevention

How to Prevent Allergies

Take steps to identify and avoid your allergy triggers and find out how to prevent a serious reaction. Click here.

Neti Pot, Nasal Irrigation Pros and Cons

Find out when it's OK to use a neti pot or other forms of nasal irrigation, and when you may need more help.

Complications

Allergies and Asthma

Asthma attacks (worsening of asthma symptoms) can be triggered by allergies, which can temporarily increase the inflammation of the airways in a susceptible person.

Allergies and Sleep

Many of us know the misery of allergies all too well -- the sneezing, runny nose, and postnasal drip; watery, itchy eyes, ears, nose, and throat. Whether from the symptoms or the medication we use to treat them, our sleep often suffers.

Sinusitis

Sinusitis is an inflammation, or swelling, of the tissue lining the sinuses. Normally, sinuses are filled with air, but when sinuses become blocked and filled with fluid, germs (bacteria, viruses, and fungi) can grow and cause an infection.