When They Do Not Know You: What Is Happening, and How Carers Carry On

Not being recognised is a symptom of a failing recognition system. It is not a statement about the relationship, about how much you are loved, or about how well you have done this job. It also hurts, and nobody should try to argue you out of that. Both halves of that are true at once, and the reason to hold them together is practical: the carers who cope best with this are not the ones who feel it least, but the ones who stopped reading it as a verdict.

The scale first, because it helps to know this is not a rare event happening to you alone. In 2021, 57 million people were living with dementia worldwide, with nearly 10 million new cases every year, and Alzheimer’s disease may contribute to 60 to 70 percent of cases (WHO, Dementia fact sheet, page dated 3 July 2026)¹.

This is the article on this site where I have least standing and I want to be honest about it before you read another line. My mother does not have dementia and she knows exactly who I am. Everything below comes from the guidance, from four years of a carers’ group in which this is the thing people say they dread most, and from a forum where the threads on this subject are written slowly and carefully by people who have been through it and are trying to be useful to somebody who has not. Where a beat belongs to one of them, it is theirs. I have not borrowed anybody’s moment and dressed it up as mine.

This article sits under caring for a parent at home and belongs with dementia care at home.

What is actually happening?

Naming and placing a face is a specific job that the brain does, and it can fail while other things are still working. That is the accurate version, and it is worth resisting the more dramatic framing that the person “has gone”, because it is not what carers describe.

What carers and clinicians describe, over and over, is a gap between recognising and responding. Somebody who cannot say who you are may still relax when you come into the room, may still turn towards your voice, may still be unsettled when you leave, and may still take your hand without hesitation. They may greet you warmly and, twenty minutes later, be unable to say your name. The familiarity is running on different machinery from the identification, and the machinery fails at different rates.

Three specific things happen often enough that carers should expect them.

• Being placed as somebody else. A daughter is taken for a sister, a husband for a father, a son for a brother. The substitution is usually somebody from an earlier decade, which is a clue about where the person is living in time rather than a random error.
• Being looked for while you are standing there. A person may ask when their daughter is coming while their daughter is holding their hand, because the daughter they are expecting is thirty years younger than the woman in the chair.
• Recognition returning. It is not a door that closes once. Most carers describe an intermittent phase that runs for a long time, sometimes years, with good days and bad hours inside the same day.

Why does it come and go, and when should that worry you?

Fluctuation across weeks and months is part of the picture. Fluctuation across hours, or a loss that arrives within a day or two, is not, and this is the most clinically important paragraph on the page.

Dementia is a gradual decline over months and years. Anything that arrives over hours or a day or two has a different cause, and the commonest is delirium. NICE describes it as a clinical syndrome characterised by disturbed consciousness, cognitive function or perception, with an acute onset and a fluctuating course, usually developing over 1 to 2 days, and says plainly that “it can be prevented and treated if dealt with urgently”². It also states the difficulty directly: “It can be difficult to distinguish between delirium and dementia and some people may have both conditions.”²

The instruction that settles what to do is verbatim: “If there is difficulty distinguishing between the diagnoses of delirium, dementia or delirium superimposed on dementia, manage the delirium first.”² Nobody expects you to diagnose anything. You are the only person who knows what they were like last Tuesday, and that comparison is the information the clinician cannot get anywhere else.

Look for the quiet version too. NICE tells clinicians to be “particularly vigilant for changes that may indicate hypoactive delirium, which are often missed, such as withdrawal, slow responses, reduced mobility and movement, worsened concentration and reduced appetite”². A person who has gone quiet and stopped engaging is showing you as much as one who is agitated.

Two other things worth checking before accepting a step change: whether they can hear and see you properly, because a great deal of apparent non-recognition is a person without their glasses in a dim room, and whether anything has changed in the medicines. Delirium or dementia sets out the whole distinction, and spotting when someone is getting worse is the general method for telling a slow change from a fast one.

What do you say in the moment?

Say who you are, warmly, without turning it into a test. The structure that works is the same one that works for repeated questions: lead with the information, address the feeling, then move to something to do.

• Approach from the front, at their eye level, and slowly. Being appeared at from the side or from above is startling, and startled people do not recognise anybody.
• Lead with your name and your relationship. “It’s Maura, your daughter.” Every time, as a greeting rather than as a correction.
• Do not test. No “do you know who I am”, no “guess who”, no “you know me”. Every one of those is an examination somebody is about to fail.
• Do not argue, and do not produce evidence. Photographs and dates do not restore recognition and can increase distress. Bring photographs out to talk about, never to prove a point.
• Use the channels that still work. Voice, touch if it is welcome, routine, familiar music, a shared task, food. These outlast names by a long way, and they are what the relationship can run on.
• Match the mood, not the facts. If they are anxious, settle the anxiety. If they are pleased to see a nice stranger, be a nice stranger. Being useful to them in the moment is not a concession, it is the job.
• Give yourself somewhere to put your face. Several carers have described stepping out for ninety seconds and coming back in, rather than trying to hold a neutral expression while their heart is going. That is allowed, and it works better than performing.

Why is quizzing the worst habit?

Because it is the one that produces distress reliably and produces nothing else. Testing somebody’s recognition asks them to do the exact task that is failing, in front of a person whose face has just fallen. They cannot pass, and even where they cannot articulate what went wrong, the atmosphere registers.

It is also usually done for the carer rather than for the person, which is the honest reason it persists. Wanting to be known by your own mother is not a shameful impulse and I do not think it needs apologising for. It just does not belong in the room. Say your name instead, and take the confirmation you need somewhere it can be given: to another carer, to a group, to a friend who understands what the week has contained.

Learning this is a skill, and NICE treats it as one. Guideline NG97 recommends offering carers a psychoeducation and skills training intervention covering education about dementia and its progression, personalised strategies and skill-building, understanding and responding to behaviour change, adapting communication styles, advice on their own physical and mental health, planning enjoyable and meaningful activities, information about relevant services, and planning for the future³. It adds, verbatim: “Be aware that carer interventions are likely to be most effective when provided as group sessions.”³ If nobody has offered you that, ask: getting help in covers how each kind of support is triggered.

When they think you are somebody else

Go with it, unless it is causing harm. This is the single most common form the experience takes and it is far more workable than being taken for a stranger, because a role you have been assigned is still a relationship you can occupy.

A few practical notes from carers who have lived in this for years. The substitution is informative: being taken for your own mother usually means the person is somewhere in the 1960s, which tells you what conversation is available. The role can be worked with: if you are the sister, you can be the sister for an hour, and the tea still gets drunk. The one place to be careful is a decision: if somebody agrees to something while believing you are their spouse, that agreement is not worth much, and important conversations belong in the clearest window of the day. Where decisions need to be made at all, see power of attorney and decisions, and note that those instruments can only be created while capacity remains.

Being taken for a spouse who has died, or being asked where your own husband is when your husband is the person asking, is the version that lands hardest on people caring for a partner. Caring for a partner, not a parent covers what changes when there is no shift change and no going home.

When they are frightened of you

This is the hardest version and it needs treating as a clinical and safety matter rather than as a personal rejection. A person who believes there is a stranger in their bedroom is frightened, and frightened people push, shout and occasionally hit.

In the moment: stop the task, step back, keep your hands where they can be seen, lower your voice rather than raising it, and give space. Do not corner anybody, do not block a doorway, and do not try to complete a bath or a change of clothes through it. Leaving the room for a few minutes resolves a surprising proportion of these, because the encounter restarts.

Afterwards, and this is the part that gets skipped: raise it. Write down the date, the time, what preceded it and what settled it, and tell the GP and the social worker. There are three reasons. The treatable causes need excluding, and a new fear or suspicion that has arrived in the last day or two belongs in the delirium column above. The care plan may need to change, particularly around personal care, which is where these episodes cluster. And if there is any risk to you or to them, it needs to be recorded and planned for rather than absorbed silently, which is what carers do by default. Keeping a care file is where the record lives, and being heard in appointments covers getting it said in a ten minute slot.

How do people carry on afterwards?

Differently, and mostly better than they expected. The most consistent thing carers say about this, and I have heard it enough times to trust it, is that the anticipation was worse than the event. The version people dread is a permanent, total erasure. The version most of them meet is intermittent, partial, and survivable, and the relationship continues in a changed form rather than ending.

What people report holding onto: presence rather than conversation; sitting rather than visiting; music, which reaches people long after speech has become difficult; touch; and the ordinary physical routines of care, which turn out to carry a lot of relationship in them. Alzheimer’s Disease International reports that people who had engaged in tailored individual cognitive rehabilitation had lower levels of disability and remained in their own homes for six months longer than average, which is an argument for asking about rehabilitation early rather than assuming nothing can be done⁴. It also records that “75% of WHO Member States still have no national dementia plan”, so how much organised support sits behind you depends heavily on where you live⁴.

What people report letting go of: the expectation of being thanked, the expectation of being known, and the habit of measuring a visit by whether it went well.

Grief for somebody who is still alive

Name it, because unnamed it turns into guilt. What carers describe after a first episode of non-recognition is grief: the ordinary, physical, tiring kind, for a person who is still in the next room. It is confusing because there is no funeral and no permission, and because the person you are grieving still needs their tablets sorting on the same evening.

The measured cost of this work is not small. The Alzheimer’s Association reports, verbatim, that “the prevalence of depression is higher among dementia caregivers (30% to 40% as reported in multiple studies) than other caregivers, such as those who provide help to individuals with schizophrenia (20%) or stroke (19%)”, with anxiety among dementia caregivers at 40 percent or more⁵. That is a literature range across multiple studies rather than a single survey estimate, so read it as a direction. NICE puts the same point to clinicians in one line: “Be aware that carers of people living with dementia are at an increased risk of depression.”³

What helps has thinner evidence than the advocacy suggests, and it is better to know that in advance. NICE reports that “the evidence on the effectiveness of psychotherapy and counselling was conflicting and was limited to cognitive behavioural therapy for carers of people living with dementia. There was not enough evidence to recommend these interventions for carers generally”, and on advocacy, flatly, “There was no evidence in this area”⁶. Skills training in a group remains the best-supported option³. None of that is a reason to sit with this alone; it is a reason not to conclude you have failed when a service does not fix how you feel.

Guilt, resentment and anger is the page for what this actually feels like from the inside. Carer burnout and your own health sets out what sustained caring does and where the popular claims about it overstate the evidence. If you are looking further ahead than today, palliative care at home explains what palliative care is and how much earlier it starts than families expect, and when caring ends exists because nobody prepares carers for that either.

This is a call today, not a stage to accept quietly

Losing recognition gradually, over months, is a conversation to have at the next review. Losing it suddenly is not. Ring the same day, and lead with what they were like last week, if the person you look after:

• Has stopped recognising you within the last day or two, or recognises you at breakfast and not at teatime.
• Is more confused than they were yesterday, or the confusion comes and goes through the day. Use the word confusion, and the word delirium if you think it applies.
• Has become frightened, suspicious, or is seeing or hearing things that are not there, when that is new for them.
• Has become withdrawn, drowsy, slow to respond or has stopped finishing meals, which is the quiet form of delirium and the one most often missed².
• Has a new fever, has stopped drinking, has not passed urine, or is in new pain, including agitation in somebody who cannot tell you what hurts.
• Has had a fall, a recent hospital stay, an anaesthetic, or any new or changed medicine.

Who to ring: in the United Kingdom, their GP surgery, or NHS 111 out of hours. In Ireland, their GP or the out of hours GP service. In the United States, their own doctor’s office, or the nurse line their plan runs, or an urgent care center. In Australia, their GP, or healthdirect on 1800 022 222. In Canada, their family doctor or the provincial health line, 811 in most provinces.

Use the emergency number immediately for changed breathing, chest pain, one-sided weakness, changed speech, a first seizure, an unrousable person, or bleeding that will not stop: 999 or 112 in the United Kingdom and Ireland, 911 in the United States and Canada, 000 in Australia, 112 across the European Union.

And one for you, because carers never apply it to themselves. If this is the thing that has tipped you into not coping, if your own mood has changed, or if you are having thoughts of harming yourself, that is your own doctor or an urgent mental health line where you live, today. Being the person who was not recognised makes it more urgent, not less.