What is mental illness?

At a glance

“A mental illness is a health problem that significantly affects how a person feels, thinks, behaves, and interacts with other people. It is diagnosed according to standardised criteria. The term mental disorder is also used to refer to these health problems.” (Australia Department of Health)

Mental illness is more common than people realise. The Australian Bureau of Statistics estimate that one in five Australians experience mental illness in any year. There is no single cause for mental illness, it is a mix of factors and can affect anyone.

Mental illness is a term that is used to cover a number of different conditions, with different symptoms and different impacts and for different lengths of time for each person.

  • Even when people have the same illness, the impact and affect for each person is different.
  • It is also important to remember that conditions may be episodic, and many people will have periods of being well and periods of being unwell.

The lived experience perspective on the nature of ‘mental illness’ is diverse. For example, often ‘voice hearers’ are happy to hear voices and do not see this experience as creating any barriers for them … or see themselves as ‘ill’ or ‘disordered’.

-A person with lived experience of a mental health condition.

Resources

Mental illness
This page provides a brief overview of mental illness, with links to more sites for information at the bottom of the page.
Type: Web page
Estimated reading time: 5 minutes
Produced by: Health Direct

What is mental illness?
This fact sheet and guide give brief overviews of mental health and mental illness. You can also click through to a range of other fact sheets and guides.
Type: Fact sheet and guide
Estimated reading time: 5 minutes
Produced by: SANE Australia

Fact vs myth: mental illness basics
This fact sheet separates truths about mental illness from the myths.
Type: Fact sheet
Estimated reading time: 5 minutes
Produced by: SANE Australia

Current as at: Monday 20 January 2020
Contact page owner: Mental Health