Caring for someone with dementia means unlearning many of the communication habits that feel natural. Correcting mistakes, asking “don’t you remember?”, arguing with false beliefs, and treating the person like a child all seem harmless or even helpful, but each one can trigger confusion, agitation, or withdrawal. Knowing what not to do is often more useful than knowing what to do, because a single misstep can undo an hour of calm.
Don’t Correct, Quiz, or Argue
The most common mistake caregivers make is trying to pull the person back to reality through logic. This takes many forms: correcting a wrong statement, reminding them of something they forgot, arguing against a false belief, or quizzing them on recent events. All of these feel like the right thing to do. None of them work.
Here’s what these mistakes sound like in practice:
- Reasoning: “You’ve been seeing the doctor every three months for two years. It’s on the calendar and I told you yesterday.”
- Arguing: “Don’t be silly! The bank wouldn’t be forging your signature.”
- Quizzing memory: “Hi Mom. You remember Eric, don’t you? What did you do today?”
- Reminding: “Joe called yesterday and you talked with him for 15 minutes.”
Each of these responses forces the person to confront a gap in their memory, and that confrontation doesn’t produce clarity. It produces shame, frustration, or fear. As Alzheimer’s San Diego puts it: “Reminders are rarely kind. They tell a person how disabled they are, over and over again.” The person cannot absorb the correction because the part of their brain that would process it is damaged. You’re essentially asking them to use a broken tool to fix itself.
There’s a neurological reason this doesn’t work. Many people with dementia have a condition called anosognosia, where the brain can no longer update its own self-image. Normally, when something changes in your body or mind, your brain registers the change and adjusts your understanding of yourself. With anosognosia, that update mechanism is broken. The person genuinely does not know they have memory loss. They aren’t being stubborn or in denial. Their brain literally cannot register the deficit. So when you insist they’re forgetting things, you’re contradicting what feels, to them, like a perfectly functioning mind. The result is almost always distress.
Don’t Talk to Them Like a Child
When someone struggles with basic tasks, it’s tempting to simplify your voice, use pet names, or take over decisions entirely. This is called infantilization, and research shows it does real psychological damage. Speaking to someone with dementia in a singsong tone, using “we” when you mean “you” (“Are we ready for our bath?”), or making choices for them without asking strips away their sense of identity and autonomy.
The effects go beyond hurt feelings. Research published in the Journal of Sociology and Social Welfare found that patronizing speech actually lowers the person’s level of functioning over time. When caregivers consistently interact with someone as though they’re less capable than they are, the person begins to perform at that lower level. It becomes a self-fulfilling prophecy: the caregiver assumes incompetence, speaks accordingly, and the person’s behavior starts to match the expectation. Some residents in care facilities respond defensively with sarcasm or verbal aggression. Others withdraw entirely from social interaction. Both responses signal that the person feels their dignity is under threat.
Perhaps most concerning, people who passively accept infantilizing treatment may suffer the most. When someone stops pushing back and simply complies with being treated as confused, their actual cognitive abilities can decline faster than the disease alone would cause. The caregiving environment itself becomes a source of harm.
The alternative is straightforward. Speak to the person as an adult. Offer choices rather than commands. Ask what they’re still comfortable doing before stepping in to help. The Alzheimer’s Association recommends speaking directly to the person rather than talking about them to a companion, maintaining eye contact, and giving them time to respond without interrupting.
Don’t Overstimulate the Environment
A noisy, chaotic, or poorly lit environment can trigger agitation in someone with dementia well before you notice any obvious cause. Research from the University of Tasmania’s Design and Dementia project found that environmental conditions, particularly sound and light, have a measurable impact on agitation levels, often 12 to 33 minutes before visible behavioral changes appear.
Sound variability is a major trigger. Sudden noises, voices rising and falling unpredictably, or inconsistent background noise (a TV blaring in one moment and silence the next) were linked to verbal agitation: calling out, repeating words, or verbal aggression. It’s not just loud noise that’s the problem. It’s unpredictable noise. A steady, low level of ambient sound is far less distressing than a quiet room periodically interrupted by a slamming door or a ringing phone.
Low light is equally problematic. When light levels dropped below their usual range, residents showed more physical agitation like pacing, wandering, and restlessness. Most rooms in the study had light levels below 100 lux, which is dimmer than a typical well-lit living room. Hallways produced more agitation than living rooms, likely because they’re transitional, confusing spaces with less natural light and fewer orientation cues.
Practically, this means keeping living spaces consistently well-lit during the day, minimizing sudden changes in noise, turning off background television when no one is watching, and avoiding environments with too many competing stimuli. If the person becomes agitated in a busy setting, moving to a quieter, calmer space is often more effective than trying to reason with them.
Don’t Force Reality on Them
When someone with dementia says they need to pick up their children from school (children who are now in their 50s), or insists their deceased spouse is coming home for dinner, the instinct is to set the record straight. This is almost always the wrong move.
Validation therapy, developed by social worker Naomi Feil, takes the opposite approach. Instead of correcting the person’s reality, you acknowledge the emotion behind what they’re saying. If someone is waiting for their mother, the feeling driving that statement is likely a need for comfort or security. Addressing the feeling (“You’re thinking about your mom. She really loved you.”) is more effective than correcting the fact (“Your mother passed away 20 years ago”).
Reality orientation, which involves repeatedly correcting the person and reorienting them to the current date, time, and situation, was developed in the 1960s. It can be useful in the earliest stages of dementia, when memory loss is mild. But for anyone in the moderate or later stages, it has limited value and can cause significant distress. Telling someone their spouse is dead may force them to experience that grief as though it’s brand new, every single time.
Don’t Use Physical or Chemical Restraints
When someone with dementia wanders, becomes physically agitated, or resists care, restraining them can seem like the safest option. The evidence says otherwise. Physical restraints, including belts, bed rails, and tied wrists, increase the risk of death or serious injury. Even short periods of restraint are associated with pressure sores, muscle loss, joint contractures, incontinence, depression, aggression, and a deep sense of humiliation. Longer use compounds every one of these risks.
Chemical restraints carry their own dangers. The FDA has issued a black box warning, its most serious category, stating that antipsychotic drugs cause higher death rates in older adults with dementia. Both short-term and long-term use of these medications is linked to cognitive decline, increased risk of stroke, and higher mortality. The American Geriatric Society recommends avoiding antipsychotics for behavioral symptoms in dementia patients due to these risks.
If someone is wandering or agitated, safer approaches include redirecting their attention, adjusting the environment, addressing unmet needs (pain, hunger, boredom, overstimulation), and consulting with a care team about non-pharmacological strategies.
Don’t Exclude Them From Their Own Life
One of the subtler mistakes is gradually cutting the person out of conversations, decisions, and activities because it seems easier. Talking about them to their companion as if they aren’t in the room. Making all household decisions without consulting them. Stopping invitations to family events because “it’s too hard.”
A dementia diagnosis doesn’t erase personhood. The Alzheimer’s Association is direct on this point: don’t make assumptions about someone’s ability to communicate just because of a diagnosis. The disease affects each person differently, and many people retain the ability to express preferences, enjoy humor, and participate meaningfully in conversations long into the progression. Ask one question at a time, use yes-or-no questions when open-ended ones become difficult, and be patient with silences. A slow response is still a response.
The person may not remember the details of a family gathering afterward, but they can still feel the warmth of being included. Emotional memory often outlasts factual memory. The feeling of being loved, or of being excluded, lingers even when the specific event fades.