psychosis

This term describes a profound disconnection from reality, where the mind creates its own internal logic that contradicts external facts. It is characterized by a loss of insight, meaning the individual is often unaware that their perceptions are distorted.

In clinical settings, it is treated as a symptom or a syndrome rather than a single disease. Because it is an uncountable noun when referring to the general state of mental impairment, it typically does not take a plural form unless referring to specific, distinct types of psychotic episodes or clinical classifications.