A patient with Schizophrenia has been on antipsychotic medication to help with positive and negative symptoms. Which drug do you expect this to be?
Explanation & Rationale
Choice A reason: Loxapine is a typical (first-generation) antipsychotic. While it is effective at reducing positive symptoms like hallucinations and delusions by blocking dopamine D2 receptors, first-generation antipsychotics are generally less effective at treating the negative symptoms of schizophrenia, such as social withdrawal, blunted affect, and poverty of speech. Choice B reason: Lorazepam is a benzodiazepine used primarily for the short-term management of acute anxiety, agitation, or insomnia. It does not possess antipsychotic properties and is not used as a primary treatment for either the positive or negative symptoms of schizophrenia, though it may be used as an adjunct for sedation. Choice C reason: Zyprexa (olanzapine) is an atypical (second-generation) antipsychotic. These medications are designed to antagonize both dopamine and serotonin receptors. Because of this dual action, they are more effective than typical antipsychotics at alleviating negative symptoms while simultaneously controlling the positive symptoms associated with psychotic disorders. Choice D reason: Haldol (haloperidol) is a potent first-generation antipsychotic. Like loxapine, it is highly effective for acute psychosis and positive symptoms due to its strong D2 receptor antagonism. However, it often provides little benefit for negative symptoms and carries a high risk of extrapyramidal side effects, making it a less likely choice for negative symptom management.