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Understanding Allergies

Understanding allergies is the first step in managing them effectively. With the right knowledge and tools, you can navigate your allergies and enjoy a healthy, active lifestyle. Discover articles to help you learn about and manage all different types of allergies.

36 Items
Fatigue and Allergies
Understanding AllergiesFatigue From Allergies: Causes, Symptoms, and Relief
Are you struggling with Allergy Fatigue? Learn about different causes, symptoms and relief tips to help you manage your sleepiness caused by allergies.
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Woman smiling with her dor licking her cheek.
Understanding AllergiesThe Truth About Hypoallergenic Pets and Allergies
Can pets truly be hypoallergenic? What makes a dog hypoallergenic? What does hypoallergenic actually mean? Get your questions about hypoallergenic pets answered here.
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Woman blowing her nose
Understanding AllergiesWhat Can Happen When You Don’t Treat Allergies?
What can happen when you don’t treat allergies? Learn about the possible negative side effects of leaving your allergy symptoms untreated.
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Headaches from Allergies: Causes, Symptoms & Relief
Understanding AllergiesHeadaches from Allergies: Causes, Symptoms & Relief
Can allergies cause headaches? Find out if allergies are causing your headaches, learn how allergies can trigger migraines, and discover treatment and relief tips.
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Itchy, Runny Nose from Allergies: Causes, Symptoms and Relief
Understanding AllergiesItchy, Runny Nose from Allergies: Causes, Symptoms and Relief
An itchy nose can be really irritating, especially when it leads to a runny nose and sneezing at inconvenient times. Whether you’re in the office, relaxing at home or driving somewhere, it’s never ideal to have a stuffy nose or runny nose. But what causes these symptoms? Read on to learn more.
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Woman sleeping over a pillow with a clock on the nighstand
Understanding AllergiesAllergies at Night
Learn why allergies can get worse at night and find solutions to for a restful sleep. Explore common triggers and prevention tips for night time allergy symptoms.
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Woman with a headache holding a glass of water
Understanding AllergiesAll About Decongestants
Suffering from congestion? Discover what decongestants do, how they work, compare decongestants vs antihistamines, and learn how decongestants like ZYRTEC-D® can help.
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Woman sneezing in front of a man
Understanding AllergiesCan Allergies Cause Sinus Infections?
Learn how allergies can lead to sinus infections & find prevention tips. Discover the causes & symptoms of allergies vs sinus infections & find effective treatment options.
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Family of three adults sitting outside along side a creek, laughing and enjoying a sunny day.
Understanding AllergiesWhat Helps with Allergies at Home? How to Manage Symptoms with Lifestyle Changes
If you’re in need of relief from itchy eyes and a runny nose, there are plenty of lifestyle changes to help you manage your allergies at home.
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Allergies vs COVID 19
Understanding AllergiesAllergies vs COVID 19
Not sure what’s causing your sore throat or runny nose? Learn about the similarities and differences between covid-19 and allergy symptoms.
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A man holding a tissue near his face surrounded by foliage showing discomfort of seasonal allergies.
Understanding AllergiesWhat Is ZYRTEC® & What is it Used For?
Learn about what ZYRTEC® can do to help relieve common allergy symptoms.
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Person wearing a scarf clutching their chest experiencing congestion
Understanding AllergiesAllergy Congestion: Causes, Symptoms and Relief
Learn what congestion is and how it relates to allergies with this ZYRTEC® guide. From understanding symptoms to ways to get congestion relief, we’ve got it covered.
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What is ZYRTEC-D® and What is it Used for?
Understanding AllergiesWhat is ZYRTEC-D® and What is it Used For?
Want to learn about ZYRTEC-D® & how it can help relieve your allergy & congestion symptoms? Learn about ZYRTEC-D®, including active ingredients, uses, side effects & more.
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A closeup of a person with green eyes experiencing redness
Understanding AllergiesPink Eye vs Eye Allergies: How to Spot the Difference
Wondering if your eye redness is caused by allergies or pink eye? Use our helpful guide to learn about the differences and take our pink eye vs allergies quiz.
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Person touching their eyes
Understanding AllergiesWatery Eyes From Allergies: Causes and Treatment Tips
Find out what causes watery eyes, and learn about the airborne allergens that could be triggers for your symptoms. Discover simple solutions and remedies today.
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Cold vs Allergies
Understanding AllergiesCold vs Allergies: What’s The Difference?
When it comes to a cold vs allergies, you might experience similar symptoms. Discover the difference between allergies and a cold today.
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Woman smiling outside on a sunny spring day standing in front of a blossoming tree
Understanding AllergiesTypes of Allergy Medicine
Find out what kinds of allergy treatments are available, and how they work to relieve your symptoms.
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A woman blowing her nose into a tissue in an outdoor setting, showing discomfort of allergy symptoms
Understanding AllergiesCommon Allergy Symptoms and How to Get Relief
Learn more about allergy symptoms and how to identify common signs of a reaction. Find out how you can seek relief from allergies with ZYRTEC®.
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Person laying in bed experiencing a sore throat
Understanding AllergiesSore Throat From Allergies: Symptoms and Remedies
Many people will experience a sore throat from their allergies. Find out more about this symptom, and how you might be able to soothe it.
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Cetirizine hydrochloride chemical structure
Understanding AllergiesWhat Is Cetirizine Hydrochloride (HCl), And What Is It Used For?
Cetirizine is an antihistamine often used to treat allergy symptoms. In this guide, we explore how it works, its side-effects and correct dosage.
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What are Sinuses & What is Their Role in Allergies?
Understanding AllergiesWhat are Sinuses & What is Their Role in Allergies?
What are sinuses and what do they do? Learn about the sinuses, their function & how they are related to allergies. Plus, learn how to get relief from sinus congestion.
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A mother holding her young child in a sunlit outdoor setting, surrounded by nature and greenery.
Understanding AllergiesWhat Are Antihistamines and How Do They Work?
Learn all about antihistamines, including what they are, how they work, what they treat & more. Plus, find answers to frequently asked questions about antihistamines.
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Woman, laying down, squeezing lemon into her mug next to a pile of tissues, honey and a thermometer
Understanding AllergiesItchy Throat from Allergies: Causes and Treatment
An itchy throat caused by allergies can be irritating to live with – but help is at hand. Discover causes, symptoms & how to help stop an itchy throat with ZYRTEC® today.
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Two people unpacking surrounded by plants & boxes
Understanding AllergiesAbout Mold & Mildew Allergies: Symptoms, Treatment & Prevention
Think you have a mold allergy? Find out how to get rid of mold and how to find relief for your symptoms. Manage your allergies with ZYRTEC® today.
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A person sneezing with their family wrapping gifts in the background
Understanding AllergiesHow to Relieve Sneezing From Allergies
Wondering why you keep sneezing? Find out if your sneezing is caused by allergies, discover why allergies make us sneeze, and learn how to stop sneezing from allergies.
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Two people unpacking boxes in a living room, showing the potential of dust mite allergy indoors.
Understanding AllergiesHow Do You Know If You Have a Dust Allergy?
Learn all about the causes, symptoms, and treatments for dust allergies, plus discover ways to prevent dust in your home.
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Person experiencing jaw pain
Understanding AllergiesCan Allergies Cause Jaw Pain?
While there are many causes of jaw pain, did you know that allergies can be one of them? Learn more now.
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Eye Allergies: Causes And Treatment
Understanding AllergiesEye Allergies: Causes And Treatment
Allergies can irritate eyes because of pollen, pets, mold and more. Find out symptoms and how to treat eye allergies, including at-home remedies, to find relief.
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A family outside playing football together in the grass
Understanding AllergiesGrass Pollen Allergy Symptoms and Treatment
Discover the different types of grass pollen allergy and how grass pollen may affect you, as well as how to manage and relieve your symptoms with Zyrtec.
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A group of people hiking together surrounded by trees
Understanding AllergiesTree Pollen Allergy Symptoms and Types
A tree pollen allergy can start in early spring and last until summer. Understand symptoms, the different types and ways to treat your allergy.
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Family hanging out on a couch together
Understanding AllergiesMonth-By-Month Pollen Allergy Guide
Ever wonder what the pollen is going to be like each month? The weather, location, and time of year determine which types of pollen are most prevalent. This quick guide can help you understand which months have the highest levels of pollen and help you plan ahead throughout the year.
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A woman smiles while holding a small potted plant in her hand as she works in her garden.
Understanding AllergiesAbout Weed Pollen Allergies
Learn about weed pollen and how you can manage this powerful allergy trigger. Find out where it is found and what to watch out for.
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A person in a field touching their face
Understanding AllergiesWhat is Hay Fever?
Discover what hay fever is, when it strikes and how it is connected to seasonal allergies. Plus, learn about common symptoms, causes and remedies to help with relief.
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A person with their dog holding a yoga pose in their living room
Understanding AllergiesWhat is a Dust Mite Allergy? (Plus How to Get Rid of Dust Mites in Your Home)
Learn about dust mites, as well as the causes and symptoms of a dust mite allergy. Plus, discover treatment options and how you can get rid of dust mites in your home.
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A brown goldendoodle dog
Understanding AllergiesAbout Pet Allergies
Find out what really triggers pet allergies and how to manage a pet dander allergy.
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Ragweed
Understanding AllergiesRagweed Allergy: Symptoms, Treatment and Definition
Think you might have a ragweed allergy? We take you through the symptoms – as well as offering top tips on how to manage it.
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