Antipsychotics for patients with dementia: The road less traveled

Maintenance treatment may be appropriate for patients who have demonstrated a clear benefit from antipsychotic treatment without undue adverse effects, and in whom a trial dose reduction has resulted in reappearance of the target symptoms. A formal monitoring plan to assess changes in response and the significance of adverse effects should be in place. Review the target behavior, changes in function, and significance of adverse effects at least every 3 months.

How to approach discontinuation

Behavioral and psychological symptoms of dementia are frequently temporary. If the patient has been stable, gradual dose reduction and eventual discontinuation of antipsychotics should be attempted every 3 months. Studies have reported that most patients who were taken off antipsychotics for treating BPSD showed no worsening of behavioral symptoms.²⁷

Discontinuation of antipsychotics should be done gradually by reducing the dose by 50% every 2 weeks, and then stopping after 2 weeks on the minimum dose, with monitoring for recurrence of target symptoms or emergence of new ones. The longer a medication has been prescribed, the slower the withdrawal occurs. Thus, the possibility of emerging symptoms related to drug withdrawal will lessen.

A roadmap for judicious prescribing

Table 4  summarizes the take-home points when prescribing an antipsychotic to treat BPSD for a patient who has dementia. Although SGAs may be associated with significant adverse effects and risks, they can be appropriate for treating BPSD in patients with dementia, particularly for individuals with dangerous agitation or psychosis. These agents can minimize the risk of violence, reduce patient distress, improve the patient’s quality of life, and reduce caregiver burden. In clinical trials, the benefits of antipsychotic medications have been modest. Nevertheless, evidence suggests SGAs can reduce psychosis, agitation, aggression, hostility, and suspiciousness, which makes them a valid option to consider when those symptoms are present and other interventions have proven insufficient.

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When underlying treatable or reversible causes of BPSD in dementia have been ruled out or nonpharmacologic treatments have failed, a trial of an antipsychotic may be indicated. The choice of agent should focus on patient-related factors and on clearly identified target behaviors. Treatment should be started at a low dose and titrated cautiously to the lowest effective dose.

Behavioral and psychological symptoms of dementia are frequently temporary. Therefore, a gradual reduction and eventual withdrawal of antipsychotic medications should be attempted every 3 months. Studies indicate that most patients are able to tolerate elimination of antipsychotic medications with no worsening of behavioral symptoms.

Despite the limitations of treatment, SGAs remain a valid consideration when other interventions have proven insufficient. However, judicious use of these agents remains the cornerstone of therapy.

Bottom Line 

Until better treatment options become available, second-generation antipsychotics (SGAs) continue to have an important, albeit limited, role in the treatment of behavioral disturbances in dementia. Despite the limitations of treatment, SGAs remain a valid consideration when other interventions have proven insufficient. However, judicious use of these agents remains the cornerstone of therapy.

Related Resources

• Kales HC, Mulsant BH, Sajatovic MS. Prescribing antipsychotics in geriatric patients: Focus on dementia. Third of 3 parts. Current Psychiatry. 2017;16(12):24-30.
• Meeks TW, Jeste DV. Antipsychotics in dementia: Beyond ‘black-box’ warnings. Current Psychiatry. 2008;7(6):51-52, 55-58, 64-65.

Drug Brand Names

Aripiprazole • Abilify
Haloperidol • Haldol
Olanzapine • Zyprexa
Pimavanserin • Nuplazid
Risperidone • Risperdal
Quetiapine • Seroquel
Ziprasidone • Geodon