When someone with dementia is aggressive, it can be one of the hardest dementia symptoms to witness and one of the most heartbreaking. When your loved one lashes out physically or verbally, it’s easy to feel scared, helpless, or even guilty. You know it’s “the disease,” but in the moment, it can feel deeply personal.

The truth is, aggression in dementia is often a sign of distress, not defiance and there are steps you can take to restore safety, calm, and understanding.

Here’s what to do when someone with dementia is aggressive — from what to try at home to when to seek emergency or psychiatric help.

1. Stay Calm and Prioritize Safety

When aggression happens — yelling, hitting, or resisting care — your first job isn’t to fix the behavior, but to keep everyone safe.

Step back and give space.

Don’t argue or reason; logic won’t work in the moment.

Use a calm, quiet voice and non-threatening body language.

Remove anything dangerous nearby (objects that could be thrown or used impulsively).

If the person is physically aggressive, step away until they’ve calmed down. Never try to restrain or overpower them — it can escalate the situation and lead to injury.

2. Look for Triggers Behind the Behavior

Aggression is rarely random. Something is usually causing it; pain, fear, confusion, boredom or unmet needs.  It’s important to put on your detective hat and ask yourself:

Is my loved one in pain (arthritis, infection, constipation)?

Are they tired, hungry, or overstimulated?

Did something feel threatening (loud voices, rushing through personal care)?

Is the environment too loud, too dark (which can cause shadows perceived to be scary), or is it too busy?

Have there been recent medication changes or illnesses?

Keeping a behavior log — noting time, place, and what happened before and after — can reveal helpful patterns.

3. Try to De-Escalate the Moment

When aggression starts brewing, small adjustments can prevent a full-blown crisis:

Lower your tone and move slowly.

Acknowledge feelings instead of arguing:

“I can see you’re upset. Let’s take a break.”

Redirect gently to a comforting activity — folding towels, listening to music, or looking at family photos.

Even a few minutes of calm distraction can reset their nervous system and yours.

4. When Someone with Dementia is Aggressive – It Can Become Dangerous

Sometimes, despite your best efforts, the aggression doesn’t stop — and that’s when it’s time to bring in help.

If your loved one is physically violent, refuses all care, or you feel unsafe:

Call their primary care provider or neurologist right away. Explain exactly what’s happening.

If no one is available, and safety is at risk, call 911 — but be clear:

“My loved one has dementia and is experiencing a behavioral crisis. They need medical help, not police intervention.”

Whenever possible, request responders trained in behavioral or geriatric crisis care.  You can also ask the 911 operator to have the responders avoid using sirens which can escalate confusion or fear for your loved one.

5. What Happens If You Go to the ER

The emergency department can be overwhelming, but it’s often the safest next step if your loved one’s behavior is out of control or you fear for their safety.

Here’s what typically happens:

Medical evaluation first: The ER team will rule out causes like infection, dehydration, or medication reactions.  There may complete lab studies or medical imaging such as x-rays or scans.

Observation: Your loved one may be monitored to see if the behavior stabilizes.

Psychiatric consultation: When someone with dementia is aggressive, a psychiatrist or behavioral health specialist may be called to evaluate for further treatment or admission.

Bring a list of medications, recent changes, and clear examples of the behaviors you’ve seen. Keep your notes factual — describe what you observe, not your opinion of “why” it’s happening.  The more concrete detail, the better because this will help the provider develop an effective treatment plan.

6. Understanding Inpatient Geriatric Psychiatry

If your loved one continues to be unsafe or cannot be stabilized in the ER, they may be admitted to an inpatient geriatric psychiatry unit (often called “geri-psych”).

While the idea can be scary, this type of hospitalization is meant to help, not punish.

In a geri-psych unit:

A team of specialists will observe behaviors in a structured setting.

They may adjust or fine-tune medications for mood, sleep, or agitation.

Therapists and nurses use calm routines to restore stability.

Most stays are short-term (about 5–14 days) — just long enough to help your loved one regain control and safety.

As a caregiver, you can help by providing:.

A list of known triggers or comfort items.

Input about what works at home.

Daily communication with the treatment team about progress and next steps.

You will certainly want to remain involved so you can advocate for your loved one.  Ask questions and remain informed about the treatment plan and progress.  Be clear that you want to be kept up to date.

7. After Hospital Discharge: Building a Safer Routine

Once your loved one returns home or to their care setting:

Review all medication changes carefully.

Reintroduce structure — consistent meals, calm routines, and familiar faces.

Watch for sedation or new confusion from medication adjustments.

Schedule a follow-up visit with the psychiatrist or primary doctor within 1–2 weeks.

Many families also benefit from a behavior plan — a written guide that helps everyone (family and staff) respond consistently to agitation.

8. Give Yourself Permission to Ask for Help

Aggressive behavior in dementia is emotionally draining and often traumatic. It doesn’t mean you’ve failed — it means the disease has progressed and the support plan needs to evolve.

You deserve help, guidance, and rest, too.

If you’re struggling to manage behaviors or understand what’s driving them, my complimentary care consultation is a great place to start.  Get nurse-guided strategies to reduce agitation, improve communication, and bring calm back to your days.  Book your consultation here.

Knowing what to do when someone with dementia is aggressive can make the difference between chaos and calm.
With preparation, understanding, and professional support, these moments can become manageable — and you can feel confident again in your caregiving role.