Schizophrenia

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how many people does schizophrenia affect?
1% of the world population
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What was the Term coined by Bleuler?
Split mind, A break with reality
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What is the concordance rate of developing schizophrenia?
48%
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What is Clorpromazine?
A dopamine antagonist - Diminishes positive
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What is a dopamine agonist?
Amphetamine - Induce positive effects
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Why do agonists induce positive symptoms
Ventral tegmental area to nucleus accumbens and amygdala
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What does activity of dopamine neurons in the accumbens do?
Reinforce behaviour
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What did Snyder suggest about schizophrenics?
Report elation at the start of a schizophrenic episode
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What did Fibiger suggest?
Paranoid delusions are caused by activity in amygdala (Amygdala is involved with learning emotional response
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What do Schizophrenics with negative and cognitive symptoms exhibit?
Neurological damage
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When is a person more likely to have schizophrenia?
Born in spring months and winter
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What happens if there is a viral infection during the 2nd trimester of pregnancy?
Schizophrenia occurs
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If schizophrenia has a biological basis it should what?
Correlate with other biological traits
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What did Schiffman do?
He analysed minor abnormalities measured in 265 Danish children, 1991 adult psychiatric outcome data collected
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What did Schiffman suggest was the association with schizophrenia?
Prenatal distubrances in 1st or 2nd trimester, when combined with second hits, birth complications and family rearing increase chance of schizophrenia
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What did the low number of schizophrenia patients lead to?
Restricts generality of results (also patient account for 10% of sample?? should be =1%
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What did Davis et al suggest?
Monochronic concordance is 60%, dichoronic concordance = 10.7%
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What is depression?
Low energy levels, adhedonia, loss of appetite for food and sex, sleeping problems, constipation
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What is mania?
Euphoria, delusional poor attention span, lack of sleep, self important
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Bipolar disorder?
Alternating periods of mania and depression, 1% of the population afflicted at some point in their life, Equally frequent in men and women
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What is the characteristics of unipolar disorder?
Depression without mania, 2 or 3 three times more likely in women than men, some cases of mania without depression but rare
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What did Rosenthal find?
10 times more likely to suffer from affective disorders if a close relative also does
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What did Gershon et al (1976)?
MZ concordance = 69%, DZ concordance = 13%
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What did Price suggest?
Concordance is the same whether the twins are raised apart or together
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What is MOA?
Enzyme that destroys monoamines in PoSN, Serotonin, dopamine, norepinephrine
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What is the action of Iproniazid?
Inhibits MOA (thus increase serotonin, dopamine, norepinepherine)
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What is the action Tricyclic anti depressant?
Agonist of just serotonin and norepinerpherine
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What does it do?
Inhibits reuptake of neurotransmitter by terminal buttons
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What is SSRIs (eg Prozax, Ciralopram)
Agonist of just serotonin, inhibit reuptake of Serotonin
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What is monoamine hypothesis?
Depression caused by low activity on monoamine neurons, dopamine agonists do not relieve depression, serotonin and norepinepherine
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What does Reserpine do?
USed to treat high blood pressure, side effect: depression
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WHat is lithium used to treat?
Mania
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Why it works is not what?
Fully understood, possibly stabilises serotonin releases
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What are side effects:
Diuresis, hand tremors, weight gain, thirst
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What does Vogel suggest?
Preventing REM sleep acts as an antidepressant,
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What did Scherschlicht suggest?
Examined effects of antidepressants, all reduced rem sleep, most increased slow wave sleep
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Card 2

Front

What was the Term coined by Bleuler?

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Split mind, A break with reality

Card 3

Front

What is the concordance rate of developing schizophrenia?

Back

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Card 4

Front

What is Clorpromazine?

Back

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Card 5

Front

What is a dopamine agonist?

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