181lec7 - Psych 181 Dr Anagnostaras Lec 7 Schizophrenia and...

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Psych 181: Dr. Anagnostaras Lec 7: Schizophrenia and Parkinson's Disease John Nash
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Incidence about 1 in 100
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Schizophrenia Positive Symptoms Excesses, exaggerations, or distortions (+) Disorganized speech indicating a thought disorder (loose association to word salad) Hallucinations sensory experiences without external stimulation commonly auditory Delusions beliefs that are contrary to reality commonly persecutory in nature sometimes delusions of grandeur
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Schizophrenia Negative Symptoms Characterized by behavioral deficits (–) Avolition lack of energy & inability to persist in routine activities Alogia (poverty of speech) reduction in the amount or content of speech Anhedonia inability to experience pleasure Asociality severe impairment in social relationships Flat Affect or Incongruent Affect lack of or inappropriate emotional expression
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At least 2 of the following for 1 month: delusions hallucinations disorganized speech disorganized or catatonic behavior negative symptoms Marked functional impairment Continuous signs for 6 months Not due to drugs (e.g., amphetamine psychosis) DSM-IV Criteria
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Type I versus Type II
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An Array of Related Psychotic Disorders
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Three Subtypes of Schizophrenia (DSM-IV) Paranoid Type preoccupation with delusions and hallucinations no disorganized speech catatonia or flat affect Disorganized Type Disorganized speech, behavior, often inappropriate does not meet criteria for Catatonic Type Catatonic Type Clinical picture with at least two: motoric immobility, catalepsy, stupor (waxy inflexibility) excessive motor activity that is apparently purposeless extreme negativism or mutism peculiarities of movement (e.g., voluntary assumption of bizarre postures), stereotypies, odd mannerisms, or grimacing echolalia or echopraxia
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Hospitalized mental patients (x1000) Year
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15
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