Schizophrenia Flashcards

1
Q

What are the stages of illness of schizophrenia nad what is happening in the brain in each?

A

Premorbid-abnormal brain development

Prodromal then onset-Biochemical dysregulation and brain tissue loss

Chronic/residual-Post-deterioration, chronic/residual stage

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2
Q

What are 5 categories of symptoms of schizophrenia? What are the individual symptoms in each category?

A
Positive Symptoms
Delusions
Hallucinations
Disorganized speech
Catatonia
Negative Symptoms
Flat / blunted affect
Alogia (no thoughts)
Avolition (can't start doing anything) , Apathy 
Anhedonia
Social withdrawal
Mood Symptoms
Depression
Hopelessness
Suicidality
Anxiety
agitation
Hostility 

Comorbid Substance Abuse

Cognitive Deficits
Verbal & Working Memory
Executive functions
Attention
Learning
Processing speed
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3
Q

What are auditory hallucinations like?

A

• Auditory: hearing voice(s) with no one around

  1. Single voice or multiple voices
  2. Familiar or unfamiliar
  3. Talk to the person or about the person (commentary)
  4. Insulting or praising or arguing
  5. Command hallucinations
  6. To harm or kill self
  7. To harm or kill others
  8. To behave in some way
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4
Q

What are other kinds of hallucinations and what are they like?

A
  • Olfactory: perceiving an odor, usually foul (also: seizure aura)
  • Gustatory: perception of tastes (often unpleasant)

• Visual: seeing persons or images or inanimate objects or
animals. Lilliputian visual hallucinations (reduced size but
normal in details) can occur with substance use

  • Somatic: odd sensation(s) in the body
  • Hypnapompic: occurs during transition from sleep to partial wakefulness
  • Hypnagogic: occurs when falling asleep , with awareness
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5
Q

What kind of delusions exist and what are they like?

A
  • Bizarre: (e.g. The earth is morphing into a reptile)
  • Capgras: (e.g. A familiar person is actually an identical imposter)
  • Reference (e.g. Perceiving a “ meaning” in random events)
  • Jealousy: (e.g. The spouse / partner is unfaithful)
  • Parasitosis (e.g. being infested with parasites)
  • Erotomania: (e.g. A celebrity is in love with the patient->stalking)
  • Grandiose: (e.g. Having extraordinary powers or abilities)
  • Nihilistic: (e.g. Part of a person’s body or the universe has ceased to exist, or that one is dead (Cotard delusion)
  • Persecutory: (e.g. That a person is being threatened, harassed

or attacked by others)

  • Passivity: (e.g. being controlled by an outside power)
  • Hypochondriacal: (e.g. a body part has changed)
  • Thought control (e.g. Thoughts are being inserted or withdrawn from someone’s mind or broadcast to everyone)
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6
Q

What are some examples of thought and speech disorders?

A
  • Clang associations: rhyming words
  • Derailment: Knight’s-move thinking …
  • Flight of ideas: jumping rapidly from topic to topic, along with rapid speech
  • Loose associations: shifts in train of thought without adequate logical connection

• Verbigeration: excessive vagueness, useless repetition,
meaningless phrases or cliches

• Word salad: associations so loose, the speech is incoherent or incomprehensible

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7
Q

What are some abnormalities of thought progression?

A

• Blocking: sudden involuntary complete interruption of speech or

thought

  • Circumstantiality: tendency to digress and to insert irrelevant information or explanations and qualifications before a thought is completed
  • Perseveration: repetition or persistence or a thought when it I sno longer appropriate
  • Racing thoughts: thoughts so rapid they are experienced as almost out of control
  • Tangentiality: digression and irrelevancy so severe, the intended goal is never reached
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8
Q

What are some abnormalities of grammar and vocab?

A
  • Mannerisms: odd or eccentric expression, used recurrently
  • Neologism: a new word or phrase that seems to have a private

or special meaning, and whose derivation is not readily apparent

• Paraphasia: used erroneous words that are phonetically or

semantically related to the target word

• Stereotypy: frequent, mechanical repetitions of a word or

phrase, without an apparent purpose. May seem automatic, even

involuntary

• Word approximation: idiosyncratic word usage that seems

stilted or peculiar but whose meaning is evident.

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9
Q

What are some abnormalities of logic and reasoning?

A

• Concrete thinking: excessive literalness, inability to understand

broader meaning or symbolism

• Non-sequitor: conclusions not logically supported by the
premises

• Over-inclusive thinking: inability to maintain conceptual
boundaries, incorporating irrelevant elements making it less understandable

• Past-pointing / approximate answers: person answers questions correctly but in a way that suggests that the incorrectness is intentional and that the correct answer may be known

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10
Q

What are 7 negative symptoms of schizo?

A

Affect pathology, alogia, inattentiveness, anhedonia, asociality, avolition/apathy, anosognosia

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11
Q

What is affect pathology in shizo?

A

 Flat, blunted, restricted, or shallow affect as well

as incongruous or silly affect at times

 Decreased spontaneous movements

 Poor eye contact

 Lack of vocal inflection

 Failure to recognize the facial affect of others

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12
Q

What is anhedonia like in schizo?

A

 Loss or reduction in capacity for experiencing

pleasure

 Manifested by lack of interest in enjoyable

activities

 Decrease in sexual interest, activity, or

enjoyment

 Not reversible (like the anhedonia of depression)

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13
Q

What is alogia like in schizo?

A

 Reduction in the quantity of thought

 Decreased fluency and productivity of speech

 Poverty of speech amount as well as brief,

concrete, and unelaborated verbalizations

 Poverty of speech content: vague, generalized,

and conveying little information

 Blocking: interruption in the train of thought

 Prolonged response latency: long pauses before

responding

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14
Q

What is asociality like in schizo?

A

 Absence or reduction of interest in

relationships or interaction with other

persons

 Inability to feel intimacy and closeness

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15
Q

What is avolition/apathy like in schizo?

A

 Loss or reduction of the ability to initiate

and persist in goal-directed activities

 Typically includes poor grooming,

impersistence at work or school and

physical anergia

 Often manifested by doing nothing all day

which may be misconstrued as “laziness”

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16
Q

What is inattentiveness like in schizo?

A

 Inability to maintain task involvement or

engagement for a reasonable period of

time

 Appears engrossed in an internal world to

the exclusion of external tasks

17
Q

What is anosognosia like in schizo?

A

 Lack of insight into one’s illness or disability can

be considered both a negative symptom or a

cognitive deficit

 Lack of insight precludes seeking help or

attempting to solve personal problems arising

from schizophrenia

 Lack of insight can be reversible or irreversible

18
Q

What are 4 genetic factors involved in schizophrenia syndrome? What are risk genes associated with ?

A

RiskGenes (Glutamate)

Copy number variations
Mutations
Epigenetics

19
Q

What are 7 non-genetic factors associated with schizophrenia syndrome? Why is schizophrenia syndrome an appropriate term?

A

NMDR antibodies

Childhood Trauma

Migration

Paternal Age >45 y

PregnancyComplications (Starvation, Infections, etc.)

Delivery Complications (Brain Trauma, Hypoxia, etc.)

Winter Birth (Vitamin D deficiency)

SCHIZOPHRENIA IS ASSOCIATED WITH

MANY GENETIC AND ENVIRONMENTAL FACTORS.

THUS, SCHIZOPHRENIA IS A VERY

HETEROGENEOUS SYNDROME!

20
Q

What are 4 neuroimaging findings in schizophrenia?

A
  1. Structural changes MRI
  2. Neurochemical changes on MRS
  3. Aberrations in brain activity on ʄ MRI •
  4. White matter changes on DTI •
21
Q

What are 3 perturbations of neuroplasticity in schizophrenia? What does it result in?

A

 Increased apoptosis (cell death)

 Decreased neurogenesis (in the hippocampus and SVZ)

 Low neurotropic factors (NGF, BDNF, etc)

 Impaired neuroplasticity disrupts neuronal development, neurotransmission,

and signaling pathways, especially of the key neurotransmitters glutamate

and GABA.

22
Q

What kinds of changes occur in the brain with schizophrenia? How do they occur? What are two things that cause this brain damage?

A

With each psychotic episode and over time, there are more and more changes in the brain.

Brain volume decreases

Ventricles increase in size.

Grey matter is lost.

White matter is abnormal

Glial cell atrophy and dysfunction (oligodendrocytes)

Oxidative Stress and Neuroinflammation are causative agents.

23
Q

Where does most brain atrophy occur in schizophrenia? What are some specific examples?

A

Mostly in the Neuropil

 ↓ Dendrite length by 50%

 ↓ In the number and size of dendritic spines

 ↓ In the size [contraction] of neurite extension

 ↓ In # of glial cells