It is important that you haven't been on any anti-allergy drugs prior to these tests. Many studies have shown that asthma improves once an allergen source is reduced. In addition, children who are susceptible to developing asthma because it runs in their families are less likely to develop severe asthma if they are not exposed to high allergen levels. When planning allergen avoidance, remember that a combination of methods will be much more effective than any single method used alone. Housedust mites are microscopic creatures and cannot be seen by the naked eye.
Mites thrive in any humid place in the home.
They are often found in beds, which are damp from both the climate and from perspiration. They are also found in carpets where dampness occurs, and in clothes and soft furnishings. When dust is disturbed by activities such as vacuuming or walking around, the fragmented bodies of dead mites and the faeces of live mites become airborne. Once these tiny particles are airborne, they can easily spread throughout the house on air currents. They are small enough to be inhaled into the lungs.