When Allergies and Sleep Collide
If you find yourself lying awake at night with a blocked nose, itchy eyes or a scratchy throat, you are not alone. Allergies are one of the most common - and most overlooked - causes of poor sleep in Australia. Whether it is hay fever, dust mites, pet dander or mould, allergic reactions can make it incredibly difficult to fall asleep and stay asleep, leaving you exhausted and frustrated the next day.
Understanding how allergies affect your sleep - and what you can do about it - can make a real difference to the quality of your rest.
How Allergies Disrupt Sleep
Allergic reactions trigger inflammation in the nasal passages and airways, which leads to symptoms like congestion, sneezing, post-nasal drip and difficulty breathing through your nose. When you lie down, these symptoms often get worse because gravity is no longer helping drain mucus from your sinuses. This is why many allergy sufferers notice their symptoms peak at night.
Nasal congestion forces you to breathe through your mouth, which can lead to a dry throat, snoring and more frequent waking. Some people also experience itchy skin or eyes that make it hard to get comfortable, and the overall inflammatory response can leave you feeling restless even if you do manage to fall asleep.
Common Bedroom Allergens
Your bedroom may contain more allergens than you realise. Dust mites are one of the most common triggers, and they thrive in mattresses, pillows and bedding. Pet dander can linger on fabrics and in carpets, and mould can develop in poorly ventilated rooms, especially in humid climates. Pollen can also make its way indoors through open windows and settle on surfaces and bedding.
Practical Steps to Reduce Bedroom Allergens
The good news is that there are several practical things you can do to reduce allergens in your sleep environment and improve your rest.
Wash Bedding Regularly
Washing your sheets, pillowcases and blankets in hot water (at least 60 degrees Celsius) once a week kills dust mites and removes allergens. Using allergen-proof mattress and pillow covers creates an additional barrier between you and the dust mites living in your bedding.
Keep the Bedroom Clean and Dry
Regular vacuuming with a HEPA filter vacuum, dusting surfaces with a damp cloth, and keeping humidity levels below 50 percent can all help reduce allergens. If your bedroom tends to be humid, a dehumidifier can make a significant difference. Good ventilation is also important for preventing mould growth.
Keep Pets Out of the Bedroom
This is a tough one for pet lovers, but keeping cats and dogs out of the bedroom - or at least off the bed - can dramatically reduce exposure to pet dander overnight. If your pet has been sleeping on your bed, washing all bedding thoroughly and vacuuming the mattress can help remove built-up dander.
Shower Before Bed
If you suffer from hay fever or seasonal allergies, showering and washing your hair before bed removes pollen and other allergens from your skin and hair so you are not bringing them into bed with you. Changing into fresh clothes before sleep also helps.
Managing Symptoms at Night
Even with a clean bedroom, allergy symptoms can still flare up at night. A saline nasal rinse before bed can help clear your nasal passages, and elevating your head slightly with an extra pillow can improve drainage and reduce congestion. An air purifier with a HEPA filter running in the bedroom can also help remove airborne allergens throughout the night.
If your symptoms are severe or persistent, it is worth speaking with your GP or an allergist about appropriate treatment options, which may include antihistamines or nasal sprays designed for overnight use.
Building a Sleep Routine That Works With Allergies
Living with allergies does not mean you have to accept poor sleep. By reducing allergens in your bedroom, managing symptoms before bed and creating a calm, clean sleep environment, you can significantly improve your rest. For more ideas on setting up your bedroom for better sleep, our guide to creating a sleep-friendly environment has plenty of practical suggestions.
If you find that nasal congestion makes breathing difficult at night, nasal strips can help open your airways and make nighttime breathing more comfortable. And for those nights when allergy symptoms make it hard to wind down, a calming bedtime routine can help your body relax despite the discomfort.
"I had no idea dust mites were the reason I was waking up congested every morning. Getting allergen-proof pillow covers and washing my sheets in hot water made such a difference." - Emma, Adelaide
"Showering before bed during hay fever season completely changed my nights. I used to lie there sneezing for an hour. Now I fall asleep so much faster." - Marcus, Canberra
