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What is dust mite allergy?

Dust mite allergy can make you feel like you’ve got hay fever all year round. Your nose is blocked and it’s hard to get a good night’s sleep, even when the pollen count goes down. Dust mite allergy is one of the most common forms of allergy the world over. There aren’t many places you won’t find the pesky bugs. So here’s all you need to know about dust mite allergy, the symptoms and how to manage them.

Where does dust mite allergy strike?

Dust mites normally pose no threat, unless you’re allergic to them. And then they’re a real pain. The tiny creatures live in all our homes and in indoor public spaces. So dust mite allergy can be very hard to get away from.

You can find most house dust mites in your bedroom, especially on mattresses, pillows and bed linen. But they could be anywhere in your home. Dust mites love upholstered furniture, carpets, rugs, curtains and even soft toys.

Dust mite allergy in dry climates

Dust mites don’t like arid places. They need high humidity. The bugs will stick around all year in the right conditions but in some climates a dry summer could give you a welcome break from symptoms.

There also tend to be fewer dust mites at altitude – for instance in the Rocky Mountains or the Alps. That’s because indoor humidity tends to be lower there, not because the bugs get breathless. Clearly higher spots in the steamy tropics are the exception.

Did you Know...?

  • Dust mites are one of the most common causes of allergy.
  • Dust mites were first linked to allergic conditions in the 1960s.
  • A single dust mite produces as much as 200 times its body weight in waste in the course of its short life.
  • Dust mites can be found virtually everywhere, except in very dry places. Astronauts have even spotted them on the space station.


Speak to a healthcare provider virtually for expert allergy help in Dallas, Texas.



Speak to a healthcare provider virtually for expert allergy help in Dallas, Texas.


What is dust mite allergy?

Dust mite allergy is not a reaction to the mites themselves, but to their waste and shed skin. A single mite produces as much as 200 times its body weight in feces in the course of its short life.

Dust mite waste

The particles of waste are very small; they measure about 20-25 μm (microns), roughly the same as a pollen grain. So you can breathe them in and anything you do in your home will disturb them. Turn your head on the pillow, make your bed, walk across the room or cuddle a teddy bear and it sends up a cloud of allergens. The particles then take about 20-30 minutes to settle back down again.

Dust mite size

What are the symptoms of dust mite allergy?

Typical symptoms of an allergy to dust mites include:

  • Congested, stuffy nose
  • Runny nose
  • Sneezing
  • Itchy nose
  • Post-nasal drip (the feeling of mucus moving down the back of your throat)
  • Itchy, red or watery eyes
  • Cough
  • Tight chest or wheezing
  • Sinus inflammation/pain
  • Skin reactions, rashes, eczema
Dust mite allergy symptoms include a stuffy or runny nose, sneezing and itchy, watery eyes.

An allergy to dust mites can cause skin reactions such as eczema (atopic dermatitis) or a skin rash. Both are caused by your body reacting to the tiny waste particles not by the dust mites themselves – luckily they don’t bite!

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Why uncontrolled dust mite allergy can lead to long-term ill health

Your immune system identifies the mites’ waste particles as dangerous intruders and activates defense mechanisms. The tissue lining your nose becomes inflamed causing symptoms of allergic rhinitis such as a stuffy, runny nose and sneezing. That has a knock-on effect.

  • Allergic rhinitis may disrupt your sleep and leave you feeling exhausted in the mornings.
  • You may have trouble concentrating, leading to problems at work or school.
  • Some people may even experience depression and anxiety.

dust mite allergy shows up as eczema, repeated flares of the rash can be very itchy and irritating. That can interfere with sleep too.

Allergy to dust mites is not a trivial problem. As you can see, it can have quite an impact on your life.

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Diagnosing dust mite allergy

To find out for certain if you have dust mite allergy, you’ll need to visit your health care provider.

Be ready to describe your symptoms, how bad they are and how long they last, and your medical history. Your health care provider might then refer you to a specialist for more tests, such as a skin prick test or a blood test, to help make the diagnosis.

How to manage dust mite allergy symptoms

Once diagnosed with house dust mite allergy, your focus will most likely be on how best to manage your symptoms, as well as minimizing your exposure to dust mite waste particles.

Allergic rhinitis is normally treated with antihistamines or corticosteroid nasal sprays. Both work by controlling the irritation and inflammation in your nose.

If you have eczema, there are skin care regimes designed to soothe and moisturize. Meanwhile antihistamines and corticosteroid creams may help control itching and inflammation.

Always follow your doctor’s or pharmacist’s advice as well as the instructions in the patient information leaflet when taking medicines to relieve dust mite allergy symptoms.

Tips for reducing dust mite allergy triggers in your home

As well as taking medications to ease symptoms, people with dust mite allergy should try to avoid contact with dust mites and their waste products.

Dust mites live in places such as bedding, carpets, soft furnishings, stuffed toys.

The tiny creatures can be found all over the home – but particularly on bedding, carpets, furniture and stuffed toys. So bedrooms are a hot spot. Dust mites thrive in warm, humid conditions; also why they love bedrooms as the covers trap sweat and the moisture in your breath.

Dust mites preferred climate

Trying to get rid of dust mites may mean adapting your home; for instance, replacing carpets with wooden floors. And there are steps you can build into your household routine to help too.


Dust mite allergy is a pest. But there are practical steps that may help you live more comfortably and benefit your long-term health. Don’t let the pest win.

Dust mite allergy tip #1: Dry up and starve dust mites out

Dust mites don’t drink water. Instead, they get their liquid by absorbing moisture from the environment through their front leg glands. They love warm damp climates and conditions. That’s why it’s really important to keep humidity levels down in your home when you have dust mite allergy.

A dehumidifier will help keep relative humidity levels down to a steady 35% to 50%, and so create an unfriendly environment for dust mites. Ideally, you’d have one for each different area of your home. But if you can only buy one, put it in your bedroom for the greatest effect.

A hygrometer is a useful tool if you have an allergy to dust mites. It measures the relative humidity in your home so you can keep track of humidity levels.

Dust mite allergy tip #2: Mite-proof your bed

Dust mites are particularly fond of bedding; they breed in the fibers of mattresses, pillows, duvets and sheets. Also, dust mites feed on dead skin particles. That’s another reason why they love your bed; you shed a lot of skin when you’re in one place for a long time.

It’s a good idea to use mite-proof covers on your bedding. These are made of very tightly woven fibers. They seal in the waste particles so you don’t breathe them in while you’re asleep.

When you have dust mite allergy wash your bedding every week at 120F to get rid of dust mites. But washing at a lower temperature can also remove a lot of the dust mites. Put stuffed animals that cannot be washed at higher temperatures in the freezer for at least 12 hours once a month and then wash at the recommended temperature.

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Dust mite allergy tip #3: Clean your home like a ninja

Household chores are super boring but they’re essential for keeping the amount of dust mites down.

But try not just to stir the dust up more than you have to. Otherwise you’ll end up breathing in even more of the allergens you’re trying to get rid of. Use a damp cloth instead of a duster and vacuum regularly.

When you have dust mite allergy all surfaces of upholstered furniture should be vacuumed regularly. It takes more than the average vacuum cleaner to do the job properly. A regular machine may make your floors look nice, but it will only remove a small portion of dust mites and might actually blow the particles back into the air.

To attack dust mites and their allergens effectively, start by using a vacuum cleaner with a HEPA filter. These can remove a high proportion of the smallest particles and trap them in the dust collector.

A goal with a plan

Dust mite allergy is a pest. But there are steps you can take that may help you live more comfortably with dust mite allergy. And that can benefit your long-term health too. Talk to your health care provider for a diagnosis first. They will help you consider the treatment options for dust mite allergy. And follow the simple steps above to cut the level of dust mites and allergens in your home. Don’t let the pest win.

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If you’ve read all the way to the end of this article, thank you. And we’d love to know what you think. Have you had symptoms of dust mite allergy? If so, have you tried any of the tips we’ve suggested? Or maybe there are some of your own you’d like to tell others about? Head over to our Facebook page or email us and share your story.

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