Dementia agitation and aggression: common triggers and how to respond

What does dementia agitation look like?

Dementia agitation is restlessness and distress that a person can't settle on their own. It's common in Alzheimer's disease and other dementias, and it often grows as the disease progresses. When it builds in the late afternoon and evening, it's called sundowning.

• Pacing, fidgeting, or being unable to sit still
• Repeated questions, calling out, or shouting
• Irritability, anger, or suspicion
• Resisting help with bathing, dressing, or medications
• Trying to leave, or insisting on going home
• Verbal aggression, such as swearing or threats, and sometimes physical aggression like hitting, pushing, or grabbing

The single most useful thing to remember: the person is not doing this on purpose. Agitation and aggression are usually a way of communicating that something is wrong when words no longer work.

What causes agitation and anger in dementia?

Most of the time, agitation happens for a reason. Working through these common triggers is the fastest way to find it:

1. 1

   Pain and physical discomfort

   Pain is an easily missed cause, because people with dementia often can't say where it hurts. Think about joints, teeth, headaches, skin irritation, and constipation.

2. 2

   Unmet needs

   Hunger, thirst, needing the toilet, being too hot or cold, tiredness, boredom, and loneliness can all show up as agitation.

3. 3

   The environment

   Loud noise, glare, a busy room, clutter, the TV on in the background, or too many people can overwhelm a brain that struggles to filter information.

4. 4

   Fear and misperceived threats

   Shadows, unfamiliar faces, mirrors, or not recognizing their surroundings can make someone feel genuinely frightened.

5. 5

   Being rushed or overstimulated

   Being hurried or pushed into a task that has become hard, like bathing or remembering names, often triggers anger.

6. 6

   Change

   A move, a hospital stay, houseguests, travel, or a new caregiver can all unsettle someone for days or weeks.

7. 7

   Medication side effects

   New medications, dose changes, and interactions between medications can cause or worsen agitation, especially when someone takes several.

8. 8

   Infection or illness

   Urinary tract infections and other illnesses can cause a sudden change in behavior, sometimes as delirium. This needs medical attention.

How to calm dementia agitation in the moment

1. 1

   Check that everyone is safe

   Before anything else, make sure no one is at immediate risk of harm.

2. 2

   Slow down and calm yourself

   Take a breath. Lower your voice, soften your face, and move slowly. Avoid sudden movements out of their line of sight.

3. 3

   Back off and ask permission

   Give them space. "May I help you?" lands much better than stepping in and taking over.

4. 4

   Listen and focus on the feeling

   Look for the emotion behind the words or actions, rather than the details. "You sound really frustrated" helps more than correcting what they said.

5. 5

   Reassure

   Short, calm phrases: "You're safe here." "I'm sorry you're upset." "I'll stay with you until you feel better."

6. 6

   Check for a cause

   Quietly run through the triggers above: pain, the toilet, hunger, temperature, noise.

7. 7

   Lower the stimulation and add light

   Turn off the TV, reduce noise, ask others to leave the room, and brighten dim or shadowy spaces.

8. 8

   Offer simple choices and gentle redirection

   Give a choice between two things, or shift to something pleasant: music, a snack, a walk, a familiar task, or talking about good memories through reminiscence.

Arguing, raising your voice, criticizing, cornering, or restraining almost always makes things worse. For step-by-step de-escalation, see how to calm sundowning, and for more on responding to feelings instead of facts, see validation therapy.

How to respond to physical aggression safely

• Step back out of reach. Stay at a safe distance until the behavior stops, and keep a clear path to the door for both of you.
• Don't restrain, grab, or corner them. This increases fear and the risk of injury.
• Don't argue or try to reason. Keep your voice low and your words few.
• Leave the room if it's safe to. Walking away for a few minutes often lets the moment pass.
• Call for help. Ask another family member, neighbor, or care worker to come if the person can't calm down.
• Remove dangers ahead of time. Lock up or remove car keys, kitchen knives, firearms, and other items that could cause harm.

Afterward, try not to hold on to what happened. Your loved one may not remember it, and the aggression was a symptom, not a choice. Do tell their doctor, especially if it's new or getting worse.

How to prevent agitation in dementia

• Keep a steady routine. Meals, bathing, and bedtime at the same times each day reduce uncertainty.
• Get daylight and movement. Walks, gardening, or dancing to music can burn off restless energy. Time outside or by a window each day also helps.
• Create a calm home. Reduce noise, clutter, and background TV. Keep well-loved objects and photos around.
• Simplify tasks. Break them into small steps and don't rush.
• Check comfort regularly. Offer drinks and snacks, prompt toilet visits, and watch for signs of pain.
• Limit caffeine, especially later in the day.
• Offer meaningful activity and company. Boredom and loneliness are common triggers. Simple jobs, music, and visits all help.
• Keep a log. The NHS suggests keeping a diary for one to two weeks to spot triggers. Note the time, what happened before, and what helped.

If evenings are the hardest time, our guide to preventing sundowning goes deeper on routines, lighting, and sleep.

When to involve the doctor

Anyone with new or worsening behavioral symptoms should have a thorough medical checkup, especially if the change is sudden. Contact their doctor if:

• Agitation or confusion appears suddenly over hours or days, which can signal infection, dehydration, or delirium.
• You suspect pain, constipation, or a urinary tract infection.
• It started after a new medication or a dose change.
• Aggressive behavior is getting worse or putting anyone at risk.
• Non-drug approaches aren't helping.

What about medication for dementia agitation?

Medications for agitation in dementia do exist, including some approved specifically for agitation associated with Alzheimer's disease. They can have serious side effects, and some carry safety warnings for older adults with dementia. Both the Alzheimer's Association and the NHS advise trying non-drug approaches first and making any medication decision carefully with a clinician.

If you're wondering whether medication could help, write down what the episodes look like, how often they happen, and what you've tried, and take that to the appointment. Never start, stop, or change a medication without talking to the prescriber.

Living with frequent agitation is draining. If you're running on empty, read our guide to caregiver burnout and ask for support. You deserve it.

Frequently asked questions