Drug Therapy for Schizophrenia
Typical Antipsychotics: These older drugs (e.g., Chlorpromazine, Haloperidol) primarily target receptors and are highly effective for positive symptoms but carry a high risk of motor side effects.
Atypical Antipsychotics: Newer medications (e.g., Clozapine, Risperidone) target both dopamine and serotonin () receptors, which helps manage both positive and negative symptoms (like apathy).
Maintenance Therapy: Drugs are often prescribed long-term to prevent relapse, even after acute symptoms have subsided, though the dosage may be adjusted to minimize side effects.
| Feature | Typical (1st Gen) | Atypical (2nd Gen) |
|---|---|---|
| Primary Target | Receptors | and Receptors |
| Symptom Focus | Positive Symptoms | Positive and Negative Symptoms |
| Motor Side Effects | High (EPS, Tardive Dyskinesia) | Lower risk |
| Metabolic Effects | Lower risk | Higher (Weight gain, Diabetes) |
| Examples | Haloperidol, Chlorpromazine | Clozapine, Risperidone |
Memorize Drug Names: Always use specific examples like Clozapine or Chlorpromazine in your answers to demonstrate depth of knowledge.
Evaluate the Biological Approach: Be prepared to discuss Biological Reductionism (treating the mind as just chemicals) and Biological Determinism (implying patients have no control over their behavior).
Side Effect Awareness: If a question asks about the limitations of drug therapy, focus on the trade-off between symptom control and the severity of side effects like Tardive Dyskinesia.
Cure vs. Management: A common mistake is describing antipsychotics as a 'cure.' They manage symptoms but do not remove the underlying cause of the disorder.
Side Effects as Symptoms: Students often confuse drug-induced side effects (like muscle stiffness or lack of emotion) with the negative symptoms of schizophrenia itself.
The 'Chemical Straitjacket': Be careful not to overlook the ethical debate regarding the use of these drugs to sedate patients rather than truly treat them.