If someone with dementia is being physically violent, your first priority is keeping yourself and others safe. Step back, give the person space, and do not try to restrain them or shout. About 35% of people with dementia exhibit physical aggression at some point during the disease, so while this is frightening, it is not uncommon, and there are concrete steps you can take both in the moment and over the longer term to reduce it.
During an Active Episode: Protect Yourself First
When violence is happening right now, resist the instinct to move closer or physically intervene. Trying to restrain someone mid-episode almost always escalates the situation. Instead, take a deep breath, step back, and give the person as much physical space as possible. Keep your body language open: don’t cross your arms, don’t raise your voice, and don’t initiate physical contact. If you can, mirror the person’s posture. If they’re seated, sit down nearby at a safe distance. This signals that you’re not a threat.
If the person is actively hitting, throwing objects, or posing a danger to themselves or others, leave the room. Remove other vulnerable people, including children or other elderly family members, from the area. Wait until things calm down before re-engaging.
Call 911 if anyone is injured, if the person has access to a weapon, or if you cannot safely leave the room. When you call, tell the dispatcher that the person has dementia. This matters because it changes how first responders approach the situation. Before a crisis ever reaches that point, lock up or hide guns, kitchen knives, car keys, and any other objects that could cause harm.
Look for a Medical Cause
A sudden change in behavior often has a medical explanation. Urinary tract infections are one of the most common culprits. In people with dementia, a UTI can trigger delirium, which looks like a dramatic spike in confusion, agitation, or aggression that comes on over hours or days rather than gradually. Watch for changes in urination patterns, new incontinence, pain, or changes in urine color or smell.
UTIs aren’t the only trigger. Pneumonia, gastrointestinal infections, skin infections, and even dehydration can provoke widespread inflammation that affects the brain and causes acute confusion on top of existing dementia. Constipation, undiagnosed tooth pain, a new medication, or poorly managed chronic pain can all manifest as aggression in someone who can no longer verbalize what’s wrong. If your loved one suddenly becomes much more confused, less alert, or behaves very differently from their baseline, treat it as a potential medical issue and contact their doctor promptly.
Use the Describe, Investigate, Create, Evaluate Approach
Once you’re past the immediate crisis, a structured method called DICE can help you figure out what’s driving the behavior and how to change it. It was developed for clinicians but works just as well for family caregivers thinking through the problem systematically.
Describe the episode in detail. What happened right before the aggression? What time of day was it? Was the person being bathed, dressed, or moved? Was the environment loud, dark, or unfamiliar? Write this down every time it happens. Patterns almost always emerge.
Investigate possible causes. This includes the medical triggers above, but also environmental and emotional ones. Was the person overtired, hungry, or in pain? Were they being rushed through a task? Did a stranger enter the home? Were they startled?
Create a plan based on what you’ve found. If aggression happens during bathing, try a different time of day, warmer water, or a sponge bath instead. If it’s tied to sundowning (late-afternoon agitation), adjust lighting and reduce stimulation in the evening. The plan should target the trigger, not just the behavior.
Evaluate whether the changes worked. Give a new strategy at least a few days before deciding it failed. If it helped but didn’t fully resolve the problem, layer on another change. If nothing is working, bring your detailed notes to the person’s doctor.
Adjust the Home Environment
Environmental changes can meaningfully reduce agitation before it becomes aggression. The goal is to minimize confusion, because confusion is one of the biggest drivers of fear and lashing out.
Lighting is a good place to start. Aim for bright, even, natural light during the day. Open curtains, trim hedges blocking windows, and eliminate harsh shadows or glare that can distort how a room looks to someone with impaired perception. Automatic light sensors in hallways and bathrooms prevent the disorientation that comes with walking into a dark space. At night, make the bedroom dark to support sleep.
Reduce background noise. Turn off the television or radio if no one is actively watching or listening. Carpets, cushions, and curtains absorb ambient sound and make a room feel calmer. Avoid bold patterns and stripes on floors, walls, or furniture, as these can be visually disorienting for someone with dementia.
Remove or cover mirrors if the person doesn’t recognize their own reflection, as this can cause significant distress. Close curtains in the evening so they don’t see reflections in the window glass. Remove loose rugs, which can be misperceived as objects to step over and can also cause falls. Choose matte flooring in colors that contrast with the walls, and use contrasting colors for doors, toilet seats, and furniture so the person can visually distinguish one thing from another. Label cupboards and doors with clear signs combining a word and a picture, placed slightly lower than you’d normally hang them.
Aggression Varies by Dementia Type
Not all dementias produce the same behavioral profile. In a study of 281 patients confirmed by brain examination after death, 42% of those with Alzheimer’s disease had a history of physical aggression. The rate was 30% in frontotemporal dementia and 31% in vascular or mixed dementia. Alzheimer’s patients may become aggressive more often because the disease affects brain regions involved in emotional regulation over time. Frontotemporal dementia, which affects personality and social behavior early, can produce aggression that looks different: more impulsive, less tied to confusion, and harder to redirect.
Knowing the type of dementia involved can help you and the care team anticipate what kind of aggression to expect and which management strategies are most likely to help.
Medication Options
Non-drug approaches should come first, but when aggression is severe and persistent, medication may be necessary. In 2023, the FDA approved the first drug specifically indicated for agitation associated with Alzheimer’s dementia. It’s an oral tablet taken once daily, starting at a low dose and gradually increasing over about two weeks to reach the target dose. The most common side effects include headache, dizziness, urinary tract infections, and sleep disturbances.
This medication, like all antipsychotic drugs used in elderly dementia patients, carries a boxed warning about an increased risk of death. That’s not a reason to refuse it reflexively, but it is a reason to make sure non-drug strategies have been genuinely tried first and to have an honest conversation with the prescribing doctor about risks and benefits. If medication is started, periodic attempts to lower the dose or discontinue it are recommended to make sure it’s still needed.
When Home Care Is No Longer Safe
There is a point where aggression becomes too frequent, too severe, or too unpredictable to manage at home. If you’re being injured, if other household members are at risk, or if the person’s behavior cannot be stabilized despite medical treatment and environmental changes, it may be time to consider a specialized memory care unit or geriatric psychiatric program.
Some states have dedicated gero-psychiatric units that accept patients with dementia and significant behavioral symptoms. Admission typically requires a psychiatric diagnosis, a mental health evaluation, and a determination that the person cannot be safely served in a less restrictive setting. These placements are not punitive. They exist because some people need 24-hour specialized care that a family home simply cannot provide, no matter how dedicated the caregiver.
Physical restraints are not a solution at home or anywhere else. Even in nursing facilities, restraints are considered a last resort and a short-term measure only. Research shows they don’t prevent falls, and people who fall while restrained are more likely to be seriously injured. Restraints also increase agitation, skin breakdown, and social isolation.
Protecting Your Own Well-Being
Caring for someone who hits, kicks, or throws things takes an enormous emotional and physical toll. Many caregivers in this situation feel guilt, grief, fear, and isolation, often all at once. The person you’re caring for is not choosing to be violent. The disease is damaging the parts of the brain that regulate impulse control and emotional response. Understanding that doesn’t make it hurt less when you’re struck, but it can help you separate the person from the behavior.
Reach out to your local Alzheimer’s Association chapter, an adult day program, or a caregiver support group. Talk to the person’s doctor about respite care options so you can take breaks. Document every episode with dates, times, triggers, and what you tried. This record is invaluable if you eventually need to make a case for higher-level care or if you’re working with a geriatric psychiatrist to adjust medications. You cannot care for someone else if you’re running on empty or getting hurt.