Asthma is a chronic inflammatory disorder of the airways that is characterised by recurring attacks of breathlessness and wheezing.
According to (Australian Institute of Health and Welfare 2012; Fraser, Waters, Forster & Brown 2017, pp. 11) it is estimated that about 10% of children aged 0-14 in Australia have been reported to have long-term asthma condition. Over the last decades, there has been an increase in prevalence of asthma both locally and worldwide.
An understanding of asthma risk factors is critical in developing effective control measures for management of asthma.Key Issues/Concerns The increase in rates of asthma has highlighted the need for an increased focus and understanding on the risk factors associated with the illness. The early focus on asthma risk factors has been on indoor environmental factors and outdoor exposures.
The exposures to indoor allergens, moulds, volatile organic compounds, dampness and exposure to environmental tobacco smoke can lead to the development of asthma (Sears 2014). Moreover outdoor air pollution such as traffic and power generation, are some of the major causes of exacerbations of childhood asthma. Outdoor air pollutions accounted for almost 14% of cases of childhood asthma in the European countries.