House Dust Mite Allergy

House dust mites are tiny creatures that live in our homes and are a major source of indoor allergies. If you’re allergic to house dust mites, you might notice symptoms like sneezing and a runny nose. Many people with dust mite allergies also have asthma symptoms, including wheezing and trouble breathing. House dust mites are especially common triggers for asthma in children.

House dust mites, close relatives of ticks and spiders, are too small to see without a microscope. A dust mite measures only about one-quarter to one-third of a millimeter. They are too small to see with your eyes alone. House dust mites eat skin cells shed by people, and they thrive in warm, humid environments. They are not usually found in dry climates. In most homes, bedding, upholstered furniture, and carpeting provide an ideal environment for house dust mites. The body parts and the waste of house dust mites are the substances that cause an allergic reaction. Most house dust mites die in low humidity levels or extreme temperatures. But they leave their dead bodies and waste behind. These can continue to cause allergic reactions. In a warm, humid house, house dust mites 

Allergy testing will show if there is allergic sensitization to house dust mites. Your doctor can use either a blood test or skin test to aid in the diagnosis. Medical history, symptoms, physical examination, and the test results will help your doctor to find the right diagnosis.

The following factors increase your risk of developing a house dust mite allergy:

  • Having a family history of allergies.
  • Being exposed to high levels of house dust mites, especially early in life, increases your risk.
  • Being a child or a young adult. You’re more likely to develop house dust mite allergy during childhood or early adulthood.
GAAPP_House dust mites

Treatment of House Dust Mite Allergy

Avoidance is the best way to manage a dust mite allergy. However, it’s impossible to completely eliminate house dust mites from your environment. If you can minimize your exposure to house dust mites, you should expect fewer allergic reactions or the reactions should be less severe, but you may also need medications to control symptoms.

Allergy medications to improve nasal allergy symptoms:

Other therapies

  • Allergy immunotherapy
    • SCIT/Allergy shots (subcutaneous specific immunotherapy)
    • SLIT (sublingual immunotherapy) tablets.

Diagnosis of House Dust Mite Allergy

  • Sneezing

Allergy testing will show if there is allergic sensitization to dust mites. Your doctor can use either a blood test or skin test to aid in the diagnosis. Medical history, symptoms, physical examination and the test results will help your doctor to find the right diagnose.

The following factors increase your risk of developing a dust mite allergy:

  • Having a family history of allergies.
  • Being exposed to high levels of dust mites, especially early in life, increases your risk.
  • Being a child or a young adult. You’re more likely to develop dust mite allergy during childhood or early adulthood.

Prevention of House Dust Mite Allergy

Having house dust mites doesn’t mean your house isn’t clean. You can’t completely eliminate house dust mites from your home, but you can significantly reduce them. Here are some tips how you can reduce the number of house dust mites:

  • Use allergen-proof bed covers. Studies show that more house dust mites live in your bedroom than anywhere else in your home. So this is the best place to start. Cover your mattress and pillows in dustproof or allergen-blocking covers. These covers are made of a material with pores too small to let house dust mites and their waste product through.
  • Wash your sheets and blankets weekly. Wash all sheets, blankets, pillowcases and bedcovers in hot water that is at least 60° C or 140° F to kill house dust mites and remove allergens. Freezing non washable items for 24-48 hours can also kill house dust mites, but this won’t remove the allergens.
  • Buy washable stuffed toys. Wash them often in hot water and dry thoroughly or put stuffed toys in a plastic bag and freeze them for 24-48 hours, then brush them well. This can also kill house dust mites.
  • Avoid bedcovers that trap dust easily and are difficult to clean frequently.
  • Keep humidity low. Maintain a relative humidity below 50 percent in your home.
  • Avoid wall-to-wall carpeting, curtains, blinds, upholstered furniture and down-filled covers and pillows in the bedroom.
  • Have someone without a dust mite allergy clean your bedroom. If this is not possible, wear a filtering mask when vacuuming or dusting.
  • Use a damp or oiled mop or rag rather than dry materials to clean up dust. This prevents dust from becoming airborne.
  • Vacuum regularly. Special HEPA filter vacuum cleaners can help to keep mites and mite waste from getting back into the air. Stay out of the vacuumed room for about two hours after vacuuming. Vacuuming carpeting and upholstered furniture removes surface dust — but vacuuming does not remove most house dust mites and dust mite allergens. A large amount of the dust mite population may remain because they live deep inside the stuffing of sofas, chairs, mattresses, pillows and carpeting.
  • Remove carpeting and other dust mite habitats. If possible, replace wall-to-wall bedroom carpeting with tile, wood, linoleum or vinyl flooring.
  • Wash rugs in hot water whenever possible. Cold water isn’t as effective. Dry cleaning kills all house dust mites and is also good for removing house dust mites from living in fabrics.
  • If you have central furnace and air conditioning unit, use a HEPA filter. This can help trap house dust mites from your entire home.