Let’s start with the most important point: When older adults with dementia say “I’m fine, no problem,” it’s often not stubbornness, nor a refusal to face reality. It’s that their brain literally cannot detect its own decline. In medicine, this is called impaired insight, and it’s a part of dementia itself.

This is an extension of the post Do 80-Year-Olds Still Need to Exercise?, written for those of you who are caring for a family member with dementia and feeling frustrated that “they won’t admit it and won’t listen.”

They aren’t doing it on purpose

What hurts many families the most is feeling that the older adult “is clearly declining but stubbornly refuses to admit it,” refusing to listen, as if they’re fighting the whole family. But please remember one thing first:

It’s “broken,” not “stubborn”

There is a system in the brain responsible for “monitoring your own status,” and dementia breaks this system too. So they aren’t seeing the problem and denying it; rather, their brain simply isn’t receiving the signal that “I am declining.” It’s like a car with a broken dashboard—it’s running out of gas, but the fuel gauge still points to full.

Understanding this cuts a lot of conflict in half: arguing with them that “you clearly can’t remember” is like yelling at a broken fuel gauge. It’s useless, and it’s not fair.

Three common misunderstandings from family

  • “They’re faking it or avoiding it”: Most of the time, they aren’t. This “not knowing they are sick” appears very early in dementia and eventually happens to almost everyone as the disease progresses. It’s a part of the disease.
  • “They’ll get it if I explain it a few more times”: Unlikely. Because the problem isn’t that they “didn’t hear you,” but that the brain cannot update itself with the fact that “I am declining.” Constantly correcting and reminding them usually just leads to fights.
  • “It’s so sad they don’t even know”: There is a counterintuitive finding worth knowing: patients who still “know” they are declining are actually more prone to depression and anxiety. A certain degree of unawareness isn’t necessarily a bad thing for the patient’s mood.

What families can do

  • Don’t waste energy trying to “convince them they’re sick.” Put your energy into practical safety and living arrangements: someone managing the meds, someone checking the stove, someone helping watch the finances.
  • Go along with them, don’t butt heads. Instead of saying “you have dementia and can’t drive,” say “I’ll drive you today, it’s on my way.” The goal is to get things done safely, not to win a debate.
  • When seeing a doctor, a family member must tag along. Because older adults will “report the good news and hide the bad” when describing their own condition, the doctor needs the family to provide a true picture of their daily life. If possible, bringing the observations of two family members is even better; everyone sees things from a different angle.
  • Caregivers must look after their own well-being. Caring for older adults like this is especially exhausting. This is a fact backed by research, not a sign that you aren’t good enough. Ask for help when you’re tired. Respite care and family support groups are completely valid resources.

When to be on high alert

When older adults “feel they are doing fine” but are actually engaging in dangerous behaviors, such as getting into more fender-benders, leaving the stove on, taking meds incorrectly, or missing doses, you can no longer wait for them to “figure it out themselves.” You need to directly block the risks through their environment and discuss it with the medical team.

An easily confused situation

Sometimes when older adults “say they are fine and don’t care about anything,” it’s actually not dementia, but depression. Depression in older adults often doesn’t look like depression and is easily mistaken for normal aging. You can check out my notes on geriatric depression for more on that.

Further reading: Full article on Do 80-Year-Olds Still Need to Exercise?, Geriatric depression

Bottom line up front: When older adults with dementia say “I’m fine, no problem,” it’s often not stubbornness or evasion, but a neurological “anosognosia” (impaired insight) — their brain literally cannot detect its own decline. This is the mechanism behind the dilemma in the Do 80-Year-Olds Still Need to Exercise? post, where the older adult feels fine but the family is struggling.

Let me say one thing first: I searched through the two hundred or so physical medicine and rehabilitation (PM&R) and geriatric medicine textbooks I have on hand, and coverage on “anosognosia in dementia” is almost non-existent. (The anosognosia in textbooks is mostly about post-stroke insight, which is a different mechanism.) So this post is mostly propped up by review articles on PubMed. I’ve tried to cite the papers wherever possible.

Three easily confused terms

  • Anosognosia: Neurological unawareness. The brain network responsible for “monitoring and updating self-status” is broken, so they cannot detect their own deficits. This is not a motivation issue; you can’t fix it with persuasion or counseling alone. (Tagai 2020, PMID 31930617)
  • Denial: Psychological defense. Facing the loss and shame brought on by “I am declining,” they use denial to protect themselves. This is emotional; theoretically, psychological intervention can partially loosen it.
  • General lack of insight: The broadest term. It doesn’t assume a cause; it could be neurological, psychological, or simply that they were never told.

Clinically, these three can coexist in the same person. It’s hard to separate them completely. But holding onto one broad principle is useful: anosognosia is “broken,” not “stubborn.” This distinction directly impacts how you explain things to the family.

How it happens

Anosognosia in dementia isn’t just one broken brain area, but a dysregulation of an entire “self-monitoring/self-updating” network. Systematic reviews indicate that it’s associated with structural atrophy or functional dysconnectivity in the frontal lobe (inferior frontal, anterior cingulate cortex [ACC], orbitofrontal), medial temporal lobe (including the hippocampus), and the default mode network (DMN) (Hallam 2020, PMID 32679396; Mondragón 2019, PMID 31161466). One theory (the Cognitive Awareness Model, CAM) splits it into three types: the core metacognitive system is broken, the executive/comparator mechanism is broken, and the memory system is so broken that it “cannot update evidence of their decline into their self-concept” (Tagai 2020, PMID 31930617).

A practical point for differential diagnosis: anosognosia in frontotemporal dementia (FTD) is usually more severe than in Alzheimer’s disease (AD), and even when given feedback, they have a very hard time revising their self-evaluation. This can be used as an auxiliary clue to differentiate AD from FTD (DeLozier 2015, PMID 26705377).

When it starts and how severe it gets

  • It starts very early: Anosognosia can be measured and is clinically significant even in the mild cognitive impairment (MCI) stage. Insight might even start declining before objective cognitive tests show abnormalities (Kelleher 2015, PMID 26643996; Cappa 2024, PMID 39051174).
  • Almost everyone gets it eventually: As the disease progresses, both the incidence and severity increase, and eventually almost all dementia patients will experience it (Wilson 2016, PMID 27438597).
  • But “severe dementia = completely unaware” is an oversimplification: Even in severe AD, lower-level sensory awareness is relatively preserved, while higher-level awareness varies by person and situation (O’Shaughnessy 2020, PMID 31942805).

Clinical assessment

In clinics and research, the most common approach is the “patient-caregiver discrepancy method”: the patient self-evaluates on a questionnaire, the primary caregiver evaluates on the same one, and the larger the gap between the two, the more severe the anosognosia (common scales include the AQ-D). There are also clinician ratings, and the discrepancy method between “how the patient predicts they will perform on a test vs. their actual performance.” (Tondelli 2018, PMID 29867398)

But the discrepancy method has a major pitfall: the caregiver’s own burden and level of depression systematically influence the scores they give the patient (the more tired the caregiver is, the more they tend to rate the patient as having “less insight”). So the discrepancy score cannot simply be taken as an objective indicator of the patient’s status alone; you have to look at the caregiver’s condition at the same time (Perales 2016, PMID 27258415). This leads directly into the next section.

Key clinical takeaways

  • You must have a reliable family member during history taking, and it’s best to ask more than one. Because the patient might not give an accurate account due to anosognosia, and a single family member’s account might be skewed by their own depression or denial. Asking an extra person helps calibrate for errors on both the patient’s and the family’s side. This is also the only place I found in textbooks that directly addresses this (APA Geriatric Psychiatry 6e, Ch.8 History Taking).
  • Anosognosia increases caregiver burden. This is one of the most consistent pieces of evidence, and it is independent of the patient’s cognition and function (Turró-Garriga 2012, PMID 22555993).
  • A counterintuitive but vital finding: patients who still have insight actually have higher depression and anxiety (Kelleher 2015, PMID 26643996). In other words, a certain degree of “unawareness” isn’t necessarily bad for the patient’s mood. Keep this in mind when explaining things to the family and when deciding “whether and how fully to inform the patient.”
  • In communication, framing it as “the brain’s function is broken” rather than “they are throwing a tantrum and refusing to admit it” can reduce a lot of family conflict.

Two evidence gaps to be honest about

I specifically looked up two things highly relevant to rehabilitation, and it turns out there are no direct studies on PubMed:

  • The direct link between anosognosia and “driving safety”: No dedicated literature; we can only infer it indirectly using the “judgment” sub-item in dementia assessment scales.
  • Anosognosia and “adherence to rehabilitation / home exercise”: Also no direct studies. The reasonable guess is “if they don’t feel they are declining, they will underestimate the need to exercise,” but right now this is just clinical reasoning without empirical backing.

Calling out these two gaps is more honest than pretending we have the answers.

Further reading: Full article on Do 80-Year-Olds Still Need to Exercise?, Geriatric depression (sometimes “not caring about anything” is actually depression; you need to differentiate)