Dust mites allergic, mainly because its secretion, excreta and body resolvent and contains more than 15 different forms of harmful proteins, diameter often only 10 micron or so, can suction to the depths of the human lung, become allergens, cause the human body allergic disease. In addition to induce asthma outside, dust mites can also cause allergic rhinitis, http://www.premiummulberryoutlet.co.uk/ the allergic conjunctivitis and allergic skin diseases. Allergic conjunctivitis in eye itching, tears, eyes aglow, palpebral conjunctiva congestion edema, etc as the main performance, allergic rhinitis to flow clear nose, sneezing as the main performance.