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Your guide to hay fever symptoms and treatment

26 November 2025

Itchy eyes, constant sneezing, and that never-ending sniffle. Sound familiar? If you’re finding yourself battling these annoying symptoms at certain times of the year, whether it’s spring blooms, summer grass, autumn leaves, or even winter pollen, you’re probably dealing with hay fever.

It’s a common problem for many Kiwis, with about 1 in 5 New Zealanders having hay fever. But the good news is there are treatments and simple ways to ease the discomfort. In this guide, we’ll help you understand what hay fever is, when it strikes, and how you can get relief to enjoy the seasons without the sniffles.

What is hay fever?

Hay fever, also called allergic rhinitis, is caused by an allergic reaction to a harmless substance in the environment around you that your body identifies as harmful. This could be house dust, pollen from grasses, weeds or trees, or animal hair and can cause cold-like symptoms such as a runny nose, itchy eyes, congestion, sneezing or sinus pressure.

In New Zealand, hay fever often flares up in spring and early summer when tree, grass, and weed pollens are at their peak. But symptoms can persist year-round for some people, depending on their triggers.

Far from just being an inconvenience, hay fever can disrupt your daily life, affecting your concentration at work or school, disturbing your sleep, and even making other conditions like asthma worse.

But you don’t have to put up with the discomfort. You can learn to avoid triggers and find the right treatment, keeping symptoms under control.

Common symptoms

Whether you’re armed with a box of tissues or reaching for the antihistamines, hay fever symptoms can vary from person to person and can sneak up slowly or hit all at once.

Hay fever symptoms can include:

For some, these symptoms are mild and short-lived. For others, they can be more severe and last for weeks - enough to interfere with daily activities.

When is hay fever season?

Symptoms can pop up year-round, or get worse during certain seasons. That’s when it’s known as seasonal allergies.

Hay fever triggers include:

You’re more likely to experience hay fever if you have a family history of allergies, asthma, or eczema, or if you already have asthma or other allergic conditions. Environmental factors, like exposure to dust mites or pollution which are common in many parts of New Zealand, can also increase your risk.

Hay fever treatment options

Medicines to treat and help prevent hay fever are available both over the counter and by prescription at your pharmacy.

Some common hay fever treatments include:

You may need a combination of these treatments to keep your symptoms under control.

You can also try a saline nasal spray or rinse if you have a blocked nose.

If you have severe symptoms, or if your symptoms aren't getting better with the medicines listed above, you may be prescribed a short course of oral corticosteroids.

How to avoid hay fever

While treatments can significantly ease your symptoms, it’s still important to avoid allergens whenever possible.

The best way to do this is by avoiding the allergens that trigger your symptoms. While it’s not always possible to avoid them completely, there are plenty of simple ways to reduce your exposure and keep symptoms under control.

Hay fever can be frustrating, but with the right knowledge and treatment, you don’t have to let it control your life. By understanding your triggers, reducing your exposure, and using effective treatments to manage symptoms, you can enjoy the outdoors all year round.