Frequently Asked Questions


What is Asthma? Back to top

Asthma is a chronic respiratory condition that is characterised by persistent inflammation of the lower airways within the lungs. There are subtypes of asthma but In most cases it is an allergic disorder. The degree of airways inflammation fluctuates according to various factors, e.g. exposure to all...

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What is Thunderstorm Asthma? Back to top

On the evening of Monday 21 November 2016, Melbourne experienced the largest ever recorded “Thunderstorm Asthma” event. After a particularly hot day a dramatic cool change arrived with thunderstorm activity and strong westerly winds. Within a short period many thousands of people across Melbourne...

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What protective steps can be taken? Back to top

There is good evidence that those who were taking inhaled corticosteroid for their asthma prior to 21 November 2016 were protected. As a general principle it is important that asthma is adequately controlled with appropriate (usually inhaled) medication. Those who have been diagnosed with asthma shou...

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What caused the Thunderstorm Asthma event in November 2016? Back to top

The people affected by the Thunderstorm Asthma event were allergic to rye grass pollen. Early in the Spring of 2016 rainfall was above average and grasses grew longer than usual. In November, at the peak of the hay fever season, large amounts of pollen were present in and around Melbourne. On 2...

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Dr Adrian Chazan


Dr Chazan is a Respiratory & Sleep Physician, and General Physician. Born in Melbourne, he undertook his basic medical training at the University of Melbourne. With a passion for sleep and breathing, he trained at world-renowned centres of excellence in Melbourne and Sydney, including Westmead Hospital, the Alfred Hospital and Monash Medical Centre. Adrian has been involved in research activities in the fields of sleep apnoea, chronic obstructive pulmonary disease and exercise physiology.

Adrian utilises the latest findings in sleep research as well as the emerging technologies in diagnosis and treatment. He takes a patient-centered approach to medical care with the aim of empowering his patients to achieve better sleep and optimal long-term health outcomes.