At risk mental state is the term used to describe the clinical presentation of those considered at risk of developing psychosis or schizophrenia. It has replaced the term prodrome

Prodrome

In medicine, a prodrome is an early symptom that might indicate the start of a disease before specific symptoms occur. It is derived from the Greek word prodromos or precursor...

in reference to emerging symptoms of psychosis, as a prodromal period can not be confirmed unless the emergence of the condition has occurred.

The original specialist service for those with subclinical symptoms of psychosis was The Pace Clinic in Melbourne, Australia. Other clinics have since developed around the world.

There has been some considerable development of how the concept can be applied clinically.

Assessed during the structured interview developed by PACE