Sz Flashcards
(51 cards)
What are the 5 subtypes of schizophrenia?
Paranoid Disorganised Catatonic Undifferentiated Residual
What are the signs of paranoid schizophrenia
Delusions of grandeur
What are the signs of disorganises schizophrenia
Speech/thought behaviour is disorganised
Flat emotion effect
What are the signs of catatonic schizophrenia
Fixed rigid postures
Severe motor abnormalities
What are the signs of residual schizophrenia
Social withdrawal
Flat emotional effect
What are the positive symptoms of schizophrenia
Delusions and hallucinations
What are delusion of grandeur
False belief of unrealistic powers/ that they are an important figure. Eg superman
Delusions of persecution
False belief they are being plotted against by friends and family
Delusions of reference
False Belief that random events have a meaning. Eg a radio show aimed st them
What are the 3 types of hallucinations?
Auditory- sounds
Visual- sights
Somatic- the thought of being eaten from the inside by insects
What are positive symptoms?
Things added to behaviour
What are the negative symptoms of schizophrenia
something which is missing from
Every day life
Eg- Avolition
What are the negative symptoms of schizophrenia
Avolition- loss of energy
Flat emotional effect- lack of emotional responses/ eye contact
How is schizophrenia diagnosed?
2 core symptoms for at least one month
Or
Other symptoms such as poor functioning which must have been present for 6+ months
What are the 3 stages in which schizophrenia occurs
Prodromal stage
Active phase
Residual phase
What is the Prodromal stage or schizophrenia?
Mainly negative symptoms, any positive symptoms are mild
What is the active phase of schizophrenia
Strong positive symptoms can last for years if untreated
What is the residual stage of schizophrenia
Most obvious symptoms have subsided but negative symptoms remain
Evaluation of classification/symptoms and diagnosis
❌ undifferentiated is too vague often confused with the different disorders
❌ catatonic type is rare and fluke be used by the drug treatment
❌often mistaken for schizoaffective disorder
❌ criteria used isn’t precise and therefore can lead to mis diagnosis- some ethnic groups and more readily diagnosed than others
✅eaton found that the more negative symptoms which are present: the more problems which occurred in education/ work
What is gottesmans study?
In relation to genetics
Looked at 40+ studies over a 60 year period, looking at genetic link for SZ. He found increase in SZ rates as genetic similarity increases.
Looked at twin studies. 17% DZ 48% MZ.
People with SZ parent have 1/8 chance of developing
Adoption studies- support it too.
Tienara- looked at 155 children who had schizophrenic biological mothers all who had been adopted at a young age. 10% found to be SZ In comparison to 1% from non- SZ mothers
what was tienaras study?
To look into adoption rates and SZ. He looked at 155 children who had schizophrenic biological mothers, and 185 children of non SZ mothers. All who had been adopted at an early age.
10% of children from SZ mothers found to have SZ
1% of non SZ mothers had SZ
What is the dopamine hypothesis?
The idea that increased dopamine- a neurotransmitter, causes positive symptoms to occur.
This has been tested-
Cocaine use causes positive symptoms and exaggerates them in people with SZ
Post mortems show unusually high levels of Dopamine in this with SZ
Anti psychotic drugs which reduce dopamine levels also treat positive symptoms
Abnormal brain structures- SZ
Lieberman and weyandt thought that englarged ventricles in those with SZ is strongly linked to negative symptoms
Evaluation of biological explanation for SZ
❌ twin studies- MZ doesn’t show 100% concordance- must be environmental influence
❌ no single gene has been identified
❌ since many of these studies, diagnosing SZ had Changed and therefore they may not be valid as an explanation
❌ diathesis stress model is more strongly supported as it considers biological and environmental factors