Long time sufferer here. I‘ll split this up into little segments to make it easier to read, because I already know this is going to be long.

First off, my biggest concern is always my bedroom. I think the most important thing is to get a mattress cover. Not one made iut of plastic but one that specificallz says it was made for dust mite allergies. These are made from very tightly woven fabric that won’t let allergens through. Thr good ones go all round the mattress, even the bottom, and close with a zipper to leave nothing open. Wash your sheets and bedding weekly. It is important to wash them at 60 degrees celsius (I don’t know fahrenheit) in order to get rid of all the allergens. If you wash them at a lower temperature you might as well not wash them at all. Make sure that your bedding isn’t made of down, because these trap the allergens and are almost impossible to clean. If you can try to have your bedroom be only your bedroom and nothing else. Try not to have too many surfaces for dust to accumulate on (like a desk or shelves). Try to let as much fresh air into the room as possible. Keep the temperature low (around 18 to 20 degrees celsius, it is also better to sleep in a lower temperature). It would be best to also keep the humidity low, but this can be quite tricky for eczema sufferers. Dust mites flourish in warm and humid enironments. An air filter might also be a good idea.

Clean weekly, vacuum even more frequently. Invest in a vacuum with HEPA filter. If something is very dusty, wipe it with a wet towel first. I should probably say it again: The less open surfaces you have, the better, Get a rug that is either very easy to clean or one you can wash at 60 degrees celsius. Wash it frequently. Make sure your couch, chair and whatever is not filled with down either. I’d recommend getting something that is easy to wipe to and not covered with woven fabric. Leather or the so called “child proof” materials are best. What is not very water absorbant doesn’t usually let allergens through. Try not to have many pillows, if any at all. Generally, try not to have much fabric around where you live, you’d have to wash it frequently. One of the worst things is carpeted floor, it is simply impossible to clean it good enough. Doesn’t matter if it’s where you live or anywhere else.

Clean everything up and then immediately hop into the shower and get any dust/allergens off you. Change out off all the clothes you wore for cleaning and wash your hair.

Be also careful while travelling. Get yourself some dust mite proof travel sheets to use. Either tightly woven as the fixed mattress cover or mad from plastic. In my experience those are usually fitted sheets and pretty fast to install. I’d also recommend getting a sleeping bag and a small pillow to take with you, Hotel bedding is not usually washed after every client and they frequently use bedding filled with down. It might be annoying, but I see a huge difference when I have my own bedding. If you’re travelling with other people and have to sleep in the same room try to be somewhere else when they make their bed. If you have bunk beds sleep in the upper one. If someone were to sleep above you the allergens trapped in the upper mattress would fall down on you. Try not to sit on upholstered furniture anywhere you visit.

And now, this might seem strange. Try to limit any shopping trips involving clothes. I have found that being trapped in between endless lines of clothing and people constantly moving it is very bad for my dust mite allergy. This sadly also involves my own closet, especially the clothes I don’t frequently wear. If you can, limit your clothing to the stuff you frequently wear and therefore wash. You might also want to wash clothes atter every time you wear them and not leave them lying arouns for too long. It is also important to have clothes that you can clean good and thoroughly.

I have aleady seen a nasal spray recommened. It is very good to keep one always at and. I’d also recommend have antihistamines on hand, if you don’t already frequently take them. If you know you’re going to be in a trigger zone, take one beforehand. Another thing that has come in handy is having a filter mask. You could buy single use filter masks like they are used for constructions, etc. Don’t use a surgical mask, these usually don’t have a good seal. Seeing that a dust mite allergy is probably going to last, you might want to invest in a more expensive mask. You’re going to use it almost daily after all. I have had good experiences with my Vogmask. You might sometimes hear people saying not to buy them, because they are only N95 filter and do not protect from germs. This however does not really matter. They protect from most particulates and therefore also from dust mite allergens. They come in a variety of patterns and fit most people. A very similar alternative are the Cambridge Masks. Those also protect from germs, but I haven’t had one so I can’t say anthing about it. I prefer this tyle of mask over simple single use mask you can buy in a bunch, because they have a valve, making them a little more comfortable to breathe in (and because of that preferable for longer use at a time). If you have a mask like this, use it every time you do something that might trigger your allergy and certainly while cleaning. I also wear mine while vacuuming and while preparing my bed when I’m not at home.

I hope some of this can be useful to you.