On the job

Caring for Residents With Dementia: A CNA's Guide

How to communicate, what to do when a resident is agitated, and how to handle sundowning, based on NIA and CMS guidance.

By the CaregiverCert team · Updated October 24, 2026 · 6 min read

Nursing assistant holding hands and talking gently with an elderly woman

Many nursing home residents live with Alzheimer’s disease or another dementia, and CNAs spend more time with them than any other staff. Federal rules require every CNA program to teach care of cognitively impaired residents, and nursing homes must include dementia training in your yearly in-service hours (42 CFR 483.95(g)). Here are the practical skills that make the biggest difference.

How to communicate

Tips from the National Institute on Aging (NIA) and the Alzheimer’s Association:

As speech declines, nonverbal communication matters more. Some people who spoke two languages may go back to only their first language.

When a resident is agitated or aggressive

According to the NIA, agitation and aggression usually happen for a reason. Common causes include pain, too little sleep, constipation, medication effects, loneliness, too much noise, sudden changes in routine or caregivers, and being pushed to do something they can no longer do.

Sundowning

Sundowning is restlessness, agitation, irritability, and confusion that starts as daylight fades. NIA suggests:

Why non-drug approaches matter

Since 2012, CMS has worked with nursing homes through the National Partnership to Improve Dementia Care to reduce unnecessary antipsychotic medications and increase person-centered, non-drug approaches. Many of those approaches depend on CNAs: consistent staff assignments, more exercise and time outdoors, watching for and reporting pain, and activities matched to each person.

Know your residents. Learning someone’s history, routines, and preferences is one of the most effective dementia care tools you have.

Frequently asked questions

How should a CNA respond to a resident with dementia who is confused?

Stay calm, don’t argue or correct, reassure them, and gently redirect. Use simple words and one question at a time.

What causes agitation in people with dementia?

Often pain, poor sleep, constipation, medications, noise, loneliness, or changes in routine. Report possible pain or sudden changes to the nurse.

What is sundowning?

Increased restlessness, confusion, or agitation in the late afternoon and evening. A steady routine, daytime light and activity, and a calm evening can help.

Do CNAs get dementia training?

Yes. Federal rules require CNA programs to cover care of cognitively impaired residents, and nursing homes must include dementia management in the at least 12 hours of yearly in-service training.

Keep reading