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HealthInfo Canterbury


Psychosis is something that happens when a person's brain function becomes seriously disrupted. Someone with psychosis stops understanding what is real and what is not. This can be extremely distressing for them and for those around them.

When a person is experiencing psychosis they may:

Canterbury DHB has more detailed information about psychosis, its symptoms and its causes.


If you're concerned about someone's behaviour and think that they might harm themselves or someone else, call the Police on 111.

If you're concerned about someone's behaviour, but you don't think it's immediately threatening anyone's safety, contact your local mental health crisis team on one of these numbers:

Written by HealthInfo clinical advisers. Endorsed by consultant psychiatrist. Last reviewed March 2018.

See also:

Keeping physically healthy with a mental illness or addiction

Medications for mental health issues

Suicide help

In this section

About psychotic disorders

Do I have a psychotic disorder?

Living with a psychotic disorder

Support for families & friends of people with psychosis

Psychosis & young people

More information about psychosis

More information about schizophrenia

Page reference: 124133

Review key: HIPSY-124133