Question

which medications are more effective in treating the negative symptoms of schizophrenia?

select all that apply.

clozapine
olanzapine
fluphenazine
perphenazine
chlorpromazine

Explanation:

Classify the listed antipsychotic medications

• Clozapine: Second-generation (atypical) antipsychotic
• Olanzapine: Second-generation (atypical) antipsychotic
• Fluphenazine: First-generation (typical) antipsychotic
• Perphenazine: First-generation (typical) antipsychotic
• Chlorpromazine: First-generation (typical) antipsychotic

Compare efficacy for negative symptoms

• First-generation (typical) antipsychotics primarily target positive symptoms by blocking dopamine \(D_2\) receptors and have minimal to no effect on negative symptoms.
• Second-generation (atypical) antipsychotics block both dopamine \(D_2\) and serotonin \(5\text{-HT}_{2A}\) receptors, making them more effective in treating the negative symptoms of schizophrenia (such as avolition, alogia, and flat affect).

Identify the correct choices

• Clozapine and Olanzapine are atypical antipsychotics and are therefore more effective for negative symptoms.
• Fluphenazine, Perphenazine, and Chlorpromazine are typical antipsychotics and are less effective for negative symptoms.

Answer:

• Clozapine (Correct answer)
• Olanzapine (Correct answer)
• Fluphenazine
• Perphenazine
• Chlorpromazine