Schizophrenia Spectrum and other Disorders Lecture Powerpoint Flashcards
Psychosis definition
Severe disruption of thought, perception, and behavior resulting in loss of reality caused by conditions, sleep deprivation, abuse of alcohol or other drugs
Key features of psychotic disorders (5)
- delusions
- hallucinations
- disordered thinking/speech
- grossly disorganized or abnormal motor behavior
- negative symptoms
Bizarre and non bizarre delusions
Bizarre are completely not based in reality, nonbizarre could be conceivable but are likely not true (could be validated or disproven by family member)
Most common delusion type in psychosis
Persecutory - that one is going to be harmed/harassed by an individual, organization, or other group
Most common hallucination type in schizophrenia
Auditory
Referential delusions
A common delusion type in psychosis characterized by certain gestures, comments, environmental cues directed at oneself
Hallucinations
Perception like experiences that occur without external stimulus, are vivid and clear but not under voluntary control
Disorganized thinking
Inferred from individuals speech where they switch from one topic to another through derailment or loose associations
Grossly disorganized or abnormal motor beavior (including catatonia)
Manifestation ranging from sdf
Negative symptoms
Account for substantial portion of morbidity associated with schizophrenia but are less common with other psychotic disorders, include diminished emotional expression and avolution (decrease in motivated self initiated purposeful activities)
Schizophrenia definition
Chronic recurrent psychosis associated with impairments in social and occupational functioning for at least 6 months**, strongly associated with both genetic factors and environmental ones, much higher suicide rate than general population
Schizophrenia pathophysiology
Overactive dopaminergic and serotonin pathways that lead to psychosis
Schizophrenia positive symptoms (4)
- Fixed false delusions either bizarre or nonbizarre
- hallucinations (auditory hallucinations most common)
- disorganization of behaviors and thoughts interpreted from speech
- cognitive impairment early on
Cotard’s delusion
Delusional belief that one is already dead, does not exist, or have lost their blood and internal organs
Schizophrenia associated physical manifestations
- neurological
- catatonia
- metabolic disturbances