Schizophrenia and Other Psychotic Disorders

Learning Goals

Clinical Recognition: Recognize the clinical features of schizophrenia and other psychotic disorders.
Risk Factors: Explain risk and causal factors contributing to schizophrenia development.
Treatment Approaches: Identify treatment methods and clinical outcomes for schizophrenia.
Spiritual Integration: Integrate faith, considering the spiritual dimension in causality and treatment of schizophrenia.
Cultural Reflection: Critically reflect on schizophrenia using cultural humility and social justice frameworks.

Overview of Symptoms

Categories: Symptoms are categorized into three types:
- Positive Symptoms
- Negative Symptoms
- Disorganized Symptoms

Positive Symptoms

Delusions: Erroneous beliefs held despite contradictory evidence (e.g., believing the government is after them).
Hallucinations: Sensory experiences without external stimuli; includes:
- Auditory (e.g., hearing voices)
- Visual (e.g., seeing things)
- Linked to abnormal activity in Broca’s area that is involved in speech production.

Negative Symptoms

Reduced Expressive Behavior: These include:
- Flat Affect: Blunted emotional expression.
- Alogia: Minimal speech.
- Avolition: Lack of initiative in goal-directed activities.
- Anhedonia: Reduced capability to experience pleasure.
- Catatonic stupor: A state of unresponsiveness to external stimuli, often characterized by a lack of movement or reaction.

Disorganized Symptoms

Disorganized Thinking/Behavior: Includes disorganized speech and impaired goal-directed activity, reflected in:
- Cognitive Slippage: Inconsistencies and disjointed thoughts.
- Speech that fails to make sense despite grammatical structure (e.g., neologisms, incoherence).
- Disorganized Behavior: Includes lack of personal hygiene, silliness, and impairment of personal safety or health.

Diagnostic Criteria for Schizophrenia (DSM-5)

Must show at least 2 of the following:
- Delusions
- Hallucinations
- Disorganized speech
- Grossly disorganized or catatonic behavior
- Negative symptoms
Must significantly impair functioning for a meaningful duration (at least 6 months).
Other mental health disorders excluded (e.g., bipolar, schizoaffective). Substrate effects due to substance use must also be ruled out.

Prevalence and Gender Differences

Approximately 0.7% of people will experience symptoms of schizophrenia in their lifetime.
Gender Differences:
- Men are 30-40% more likely to develop schizophrenia than women.
- Negative symptoms more prevalent in men.

Other Psychotic Disorders

Schizophreniform Disorder: Symptoms similar to schizophrenia lasting 1-6 months.
Brief Psychotic Disorder: Sudden onset of psychotic symptoms lasting days, often triggered by stress.
Delusional Disorder: Patients exhibit normal behavior except for absurd, false beliefs.
Schizoaffective Disorder: Features both schizophrenia and severe mood disorders.

Biological Contributions to Schizophrenia

Strong genetic component but not solely responsible. Brain imaging shows:
- Smaller brain volume, enlarged ventricles.
- Dysfunction in brain regions (frontal cortex, temporal lobes).
Dopamine Hypothesis: Suggests involvement of specific dopamine pathways; however, overly simplistic.
Prenatal Factors: Maternal stress, complications during pregnancy, early nutritional deficiency.

Neurocognitive Impairments

Patients experience both basic (attention, memory) and social cognition impairments (recognition of emotions in others).
Structural Brain Abnormalities:
- Enlarged ventricles, reductions in gray matter, white matter issues.

Psychological and Social Factors

Past theories attributed causes to family dynamics, but recent information indicates that high expressed emotion (criticism, hostility) can trigger relapse.
Social class inversely related to schizophrenia prevalence.
Migrant status is a risk factor, higher rates found among first- and second-generation immigrants.

Cultural Considerations

Cross-cultural studies reveal better outcomes in developing versus developed nations, possibly due to higher tolerance and acceptance.
Cultural frameworks play a significant role in shaping the experience and treatment of schizophrenia.

Treatment Approaches

Medications

First-generation Antipsychotics: Developed in the 1950s, effective for severe symptoms but with serious side effects (e.g., tardive dyskinesia).
Second-generation Antipsychotics: Introduced in the 1980s, effective for positive symptoms, less likely to cause extrapyramidal symptoms, but with their own side effects (e.g., weight gain).

SIDE EFFECTS:

Extra pyramidal symptoms (EPS)- involuntary movements, tremors, rigidity, and restlessness that can occur with antipsychotic medications, particularly first-generation antipsychotics.

Tardive dyskinesia: a potentially irreversible condition characterized by repetitive, involuntary movements, often affecting the face, tongue, and limbs, which can develop after long-term use of antipsychotic medications.

Psychosocial Interventions

Family-oriented aftercare, social skills training, cognitive therapy, Assertive Community Treatment (ACT), behavioral programs in institutional settings.

Course and Outcome

Onset typically occurs in adolescence or early adulthood with historically poor long-term outcomes, but variations exist with around 38% recovery rates.
People usually have their "first psychotic break" during adolescence or early adulthood
Sometimes psychosocial treatment can occur in a community setting, involving a team of people supporting the patient

Unresolved Issues in Schizophrenia Care

Questioning recovery challenges, long-term benefits of antipsychotic medication, and the implications of continued treatment on clinical outcomes.

Spiritual Factors

Inquiries into the spiritual dimensions of schizophrenia, considerations of personal belief systems, and cultural interpretations relevant to individual experiences of psychosis.