Periodic agitation and anxiety in patients with dementia is best treated with which class of drugs?

A. Hypnotics: Hypnotics primarily induce sleep and are not effective for managing intermittent agitation or anxiety. They may worsen daytime confusion and carry a higher risk of falls in patients with dementia. B. Barbiturates: Barbiturates have significant CNS depressant effects, a narrow therapeutic window, and a high risk of respiratory depression and dependence. They are rarely used for behavioral symptoms in dementia due to safety concerns. C. Benzodiazepines: Benzodiazepines enhance GABAergic activity, producing anxiolytic and sedative effects. They are useful for short-term management of acute agitation and anxiety in dementia, particularly when non-pharmacologic interventions are insufficient. Caution is required due to fall risk and potential for cognitive worsening. D. Caffeine: Caffeine is a CNS stimulant that can exacerbate anxiety, agitation, and sleep disturbances. It is not appropriate for managing behavioral or anxiety symptoms in dementia patients.