Schizophrenia and Related Disorders Flashcards
Psychosis
Loss of contact with reality
DSM-5 Schizophrenia
6+ month: delusions, hallucinations, disorganized speech, abnormal motor activity, negative symptoms - psychotic symptoms
Brief psychotic disorder
Less than 1 month schizophrenia symptoms
Schizophreniform disorder
1-6 months schizophrenia symptoms
Schizoaffective disorder
6+ months schizophrenia symptoms + major depressive episode/manic episode
Delusional disorder
1+ month delusions that are not bizarre and are not due to schizophrenia, jealous, grandiose
Downward drift theory
Schizophrenia causes its sufferers to fall from a higher socioeconomic level to a lower one OR remain poor bc of their impairments
Positive symptoms of schizophrenia
Excess of thought/behavior/emotion - delusions, disorganized thinking/speech, hallucinations, inappropriate affect
Negative symptoms of schizophrenia
Deficits of thought/behavior/emotion - poverty of speech (alogia), blunted affect, avolition, social withdrawal
Types of catatonia (psychomotor symptom)
stupor (no response to environment, still), rigidity, posturing, excitement
3 phases of schizophrenia. Explain them
- Prodromal - no obvious symptoms, but there is noticeable deterioration
- Active - symptoms become apparent
- Residual - return to prodromal
Types of schizophrenia
Type I - positive symptoms
Type II - negative symptoms
Diathesis-stress relationship theory of schizophrenia
People with a biological predisposition will develop schizophrenia only if certain kinds of events/stressors are present
If both members of a pair of twins have a particular trait, they are ____
concordant
Dopamine hypothesis
Certain neurons that use dopamine fire extensively > transmit too many messages > schizophrenia
