PSYCH 270 Chapter Notes - Chapter 13, 15: Dementia Praecox, Schizophreniform Disorder, Schizoaffective Disorder
CHAPTER 13: Schizophrenia
Schizophrenia - “dementia praecox”
- Catatonia - alternating immobility and excited agitation
- Hebephrenia - silly & immature emotionality
- Paranoia - delusions of grandeur/persecution
- Associative splitting - breaking of associative threads
Positive Symptoms
- Delusion - disorder of thought content
- Motivational view of delusions→ a way to deal with stress, make sense of world
- Deficit view of delusions→ result from brain dysfunction
- Hallucination
- In brain, Broca’s area is most active during hallucinations
- Suggests that the person is listening to their own thoughts/voices and brain cannot tell the
difference
Negative Symptoms → Approx 25% of schizos display these sx
- Avolition → inability to initiate/persist in activities; apathy
- Alogia→ Poverty of speech
- Anhedonia→ Lack of pleasure
- Asociality→ Emotional/social withdrawal
- Flat affect→ ¼ of schizos have this → no emotions
Disorganized Symptoms
- Disorganized speech
- Inappropriate affect & disorganized behavior → laughing/crying at bad times
- Catatonia
Other Psychotic Disorders
- Schizophreniform disorder→ Schizo symptoms for a few months
- Schizoaffective disorder→ Sx of schizo + other mood disorders (depression, BP)
- Delusional disorder→ Persistent belief that is contrary to reality w/ NO other schiz sx
- Shared psychotic disorder→ getting delusions from being around delusional person
- Brief Psychotic disorder→ 1+ positive sx of schizo for a month or less
- Attenuated Psychosis Syndrome→ Sx of schizo, but are aware of troubling nature of them
- Schizotypal→ Less severe schizo
Prevalence and Causes
- Statistics:
- 0.2%-1.5% of population
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Document Summary
Catatonia - alternating immobility and excited agitation. Associative splitting - breaking of associative threads. Motivational view of delusions a way to deal with stress, make sense of world. Deficit view of delusions result from brain dysfunction. In brain, broca"s area is most active during hallucinations. Suggests that the person is listening to their own thoughts/voices and brain cannot tell the difference. Negative symptoms approx 25% of schizos display these sx. Avolition inability to initiate/persist in activities; (cid:1445)apathy(cid:1446) Flat affect of schizos have this no emotions. Inappropriate affect & disorganized behavior laughing/crying at bad times. Schizophreniform disorder schizo symptoms for a few months. Schizoaffective disorder sx of schizo + other mood disorders (depression, bp) Delusional disorder persistent belief that is contrary to reality w/ no other schiz sx. Shared psychotic disorder getting delusions from being around delusional person. Brief psychotic disorder 1+ positive sx of schizo for a month or less.
