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What percentage of the population is affected by schizophrenia?
~1%
What is the most common age of onset?
15–25 years
Is childhood-onset schizophrenia common?
Rare (1 in 40,000)
Which gender tends to develop schizophrenia earlier?
Males
What environmental factor often worsens symptoms?
Stress
What percentage of people with schizophrenia return to “regular” employment?
~15%
Is schizophrenia a single illness or multiple disorders?
Multiple disorders
At least 2 symptoms for 1 month
Delusions, hallucinations, disorganized speech, disorganized/catatonic behavior, negative symptoms
6 months
Hallucinations, delusions, disorganized speech/behavior
Affective flattening, alogia, avolition, anhedonia, social withdrawal
Subtle changes, social withdrawal, unusual behavior
Active positive/negative symptoms
Symptoms decrease toward baseline
Remission, mild persistent symptoms
Dopamine hypothesis
Enlarged ventricles, reduced gray matter, altered prefrontal cortex/hippocampus
Infection, malnutrition, hypoxia
Psych stressors, environmental stressors, prenatal stressors
Strong role; highly heritable
Nicotine
Anxiety, depression, suicide risk
Excessive water intake → hyponatremia
Increases relapse, substance use, suicide risk
Hallucinations, delusions, disorganized speech
Alogia, avolition, anhedonia, affective flattening
Impaired memory, poor executive function
Depression, increased relapse/suicide risk
Negative symptoms
Sudden interruption of thought flow
Belief thoughts/actions can cause unrelated events
New word with meaning only to patient
Words based on sound
Jumble of words, meaningless
Rapidly shifting topics
Over-inclusion of trivial detail
Replying off-topic
Repetition of others’ words
Repetition of others’ movements
Safety
Lack of awareness of illness
No
Clear, simple, reality-based
Keep It Short & Simple
Ask directly, acknowledge, but focus on reality
Calm, matter-of-fact, non-judgmental
Protect, redirect, reduce stimulation, set boundaries
Reality-based statements
Less expensive
EPS, tardive dyskinesia, anticholinergic effects
Positive symptoms
Positive & negative symptoms
Metabolic syndrome
Positive, negative, cognitive symptoms
Haloperidol
Risperidone, olanzapine
Aripiprazole
Clozapine
Weekly
Improve adherence (long-acting)
Adherence
Extrapyramidal side effects
Dystonia, akathisia, pseudo-Parkinsonism
Pseudo-Parkinsonism
Severe restlessness, pacing
Severe muscle spasm, especially neck/tongue
Benztropine or diphenhydramine
Late-onset involuntary movements
AIMS test
Neuroleptic Malignant Syndrome
Rigidity, fever, diaphoresis, ↑CPK
Stop meds, hydrate, cool, dopamine agonist, dantrolene
Toxic buildup of ACh blockade
Dry mouth, urinary retention, seizures
Weight gain, dyslipidemia, insulin resistance
Second-generation antipsychotics
Increased mortality in dementia patients
Disorganized speech (positive symptom)
Prodromal phase
Somatic delusion (positive symptom)
Flight of ideas
Living arrangement, finances, social/family support, resilience, community resources
Active connection increases engagement/adherence