Dust Mite Allergen Avoidance

A lot of times after allergy skin testing, when a patient finds out one is allergic to dust mite allergen the usual reaction is eeek! And then the patient asks if these microscopic insects bite. So, here is the low down on the dust mite allergen.

When we are told that we are allergic to the dust mite allergen it means that we are allergic to the dust mite excretions. Dust mites feed on our skin flakes. They do not bite. We spend at least 8 hours a day in our beds. Thus, the highest concentration of human skin flakes are in our beds, and therefore, the highest concentration of dust mites and their excretions will be in our beds. That is why when we give environmental control recommendation for dust mites we focus on the premise of minimizing exposure to the dust mites and their excretions.

Avoidance measures that have been shown to be effective in dust mite allergen control.

• Pillow, mattress and box-spring allergen proof covers. These tightly woven dust mite encassements serve as a barrier method to prevent exposure to the allergen. Getting a new mattress is not a viable method since it will be repopulated with dust mites an a few months.
• Wash beddings frequently in hot water(130 degrees F) or use special detergents that remove allergens(eg. Allersearch allergen wash)
  
• Choose wood or tiled floors instead of carpeting
• Use vacuum cleaners with a HEPA filtration system or one with double-lining bags. Vacuum at least twice a week
• Use a dehumidifier in conjunction with your air-conditioner. Maintain humidity levels between 30-50% year round.

A link to the AAAAI is available on indoor allergen control. Ask your allergist for more information on dust mite control.

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