Eczema, asthma and allergic rhinitis is triggered most commonly by which of the following factor?

Eczema, asthma and allergic rhinitis is triggered most commonly by which of the following factor? Correct Answer House dust mite

House dust mite is a common allergen and there is no easy way of removing it. People with allergic disease (such as asthma, eczema and allergic rhinitis) can be easily triggered by house dust mite. The most common source of these mites is the bedding. For this, sheets of the bed must be washed and cleaned weekly in hot water. Covering the mattresses, pillow and quilts by dust mite resistant cover can also be very helpful. 
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