Which drug is listed as part of Lewy Body dementia treatment options?

• A. Quetiapine
• B. Ziprasidone
• C. Lurasidone
• D. Clozapine

Answer: (A)

In Lewy body dementia, managing psychosis and agitation is tricky because many antipsychotics can worsen motor symptoms or cause sensitivity reactions. The drug that’s often listed for treating these neuropsychiatric symptoms is chosen for a safer balance between effectiveness and motor safety. Quetiapine helps reduce hallucinations and agitation without causing as much extrapyramidal symptoms or parkinsonian worsening as many other antipsychotics. It has a relatively low D2 receptor blockade at typical doses, which translates to fewer motor side effects, and it tends to have a milder anticholinergic effect, helping avoid additional cognitive decline. Start at a low dose, titrate slowly, and monitor closely for sedation, orthostatic hypotension, falls, and any QT changes on the ECG.

Clozapine can also be used and is effective, but it requires regular blood monitoring due to the risk of agranulocytosis. Other agents like ziprasidone or lurasidone have less evidence in Lewy body dementia and can carry risks such as QT prolongation or metabolic effects, making quetiapine a commonly listed option.