![Jill Simpson's data art provides a visualisation of Obsessive Compulsive Disorder.](/web/20170531160456im_/http://www.watoday.com.au/content/dam/images/g/w/g/y/w/q/image.related.landscape.460x307.gwgyu6.png/1496230609379.jpg)
Visualising anxiety: What does mental illness look like?
Unlike physical illness, mental illness is largely invisible. This makes it hard for some people to comprehend that it is a reality for at least 20 per cent of Australians each year (with anxiety disorders the most common) and nearly half of us at some point in our lives.