Presence of allergens in the home (including house dust mite allergens) may lead to chronic bronchial inflammation. Patients periodically suffer from paroxysmal shortness of breath, coughing, wheezing and increased mucous secretion. Limited air flow through the bronchi under the influence of environmental factors is called bronchial hyperresponsiveness. This is a typical feature of asthma.
ABS data (2018) shows that 2.7 million people (11.2%) in Australia suffer from Asthma. The real number of sufferers could in fact be higher as asthma is a disease which is very difficult to diagnose. Co-occurance of asthma, allergic rhinitis and atopic dermatitis has also been noted.