Key Terms
- anosognosia
- not having insight or awareness into disease
- auditory hallucination
- altered perception of hearing in the absence of external stimuli
- bizarre delusion
- fixed false beliefs with content that is not reasonably possible in this world
- cognitive symptoms
- deficits in ability to think or reason
- delusion
- fixed false belief that cannot be changed in the mind of those who hold them despite evidence to the contrary
- formication
- hallucination that bugs are crawling on the skin
- gustatory hallucination
- false perception involving taste
- hallucination
- perception of sensory experiences without natural external stimuli, including auditory, visual, tactile, gustatory, and olfactory types
- negative symptoms
- “take away” from a person’s personality, including cognitive decline and apathy
- non-bizarre delusion
- fixed false belief containing content that is plausible but inconsistent with evidence
- olfactory hallucination
- false sensory experience involving the sense of smell
- positive symptoms
- changes to behaviors or content of thought, or the presence of symptoms, including hallucinations and delusions
- psychosis
- severe mental condition where a person loses the ability to recognize reality or has lost contact with external reality, causing a loss of function and disorganization of personality
- schizophrenia
- severe mental illness and disturbance involving a collection of cognitive, affective, and behavioral symptoms that negatively impact social, educational, or occupational functioning
- tactile hallucination
- false sensory perceptions involving the sense of touch
- visual hallucination
- false sensory experience that is seen