psychosis
A mental state characterized by loss of contact with reality, including hallucinations and delusions.
Full Definition
Psychosis is a severe mental state in which an individual experiences a significant disconnect from reality, manifesting through positive symptoms (hallucinations, delusions, disorganized thinking) and negative symptoms (reduced emotional expression, decreased motivation). It can occur as a primary psychiatric disorder such as schizophrenia, or secondary to medical conditions, substance use, or medication effects. Psychotic episodes require immediate clinical attention and often necessitate hospitalization. Early intervention and appropriate antipsychotic medication can significantly improve outcomes and prevent long-term disability.
Usage
Usage note: Use precisely; avoid as general term for severe mental illness; specify type when known.
In Context
- "The patient's first episode of psychosis required immediate stabilization in the emergency department." — Emergency assessment
- "Substance-induced psychosis was suspected given the patient's recent methamphetamine use." — Diagnostic assessment