Wake-Up Call: 10 Early Signs of Frontotemporal Dementia You Might Mistake for “Just Stress” or Getting Older

Frontotemporal dementia (FTD) is different from the dementia many people traditionally associate with memory loss. In FTD, personality, behavior, judgment, language, and social awareness may change before memory becomes a major problem. That is one reason the condition can initially be mistaken for stress, depression, burnout, a midlife crisis, or simply “getting older.”

FTD is a group of disorders caused by degeneration of neurons primarily in the brain’s frontal and temporal lobes. It often develops at a younger age than other common dementias; the National Institute on Aging notes that roughly 60% of people with FTD are between 45 and 64.

Importantly, having one of these symptoms does not mean someone has FTD. Stress, depression, medications, sleep problems, thyroid disorders, vitamin deficiencies, alcohol use, other neurological conditions, and many other issues can produce cognitive or behavioral changes. What matters is a persistent, progressive, noticeable change from the person’s usual personality or abilities.

1. A Sudden Change in Personality

One of the biggest early warning signs can be a noticeable change in who the person seems to be.

Someone who was previously considerate, responsible, reserved, or socially appropriate may suddenly become:

• Blunt or rude
• Self-centered
• Irritable
• Childlike
• Emotionally detached
• Inappropriately familiar with strangers
• Unusually impulsive
• Less concerned about other people’s feelings

Family members may say, “They just aren’t themselves anymore.”

This can be particularly confusing because the person may not recognize that anything has changed.

In behavioral-variant FTD (bvFTD), changes in personality, behavior, and judgment are often central features.

Why it can look like stress

A stressful job, marital problems, financial pressure, or aging can certainly affect someone’s personality. But ordinary stress usually doesn’t explain a progressively worsening loss of social judgment or a fundamental change in personality.

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2. Losing Empathy or Emotional Sensitivity

Another subtle sign is a decline in the ability to understand or respond appropriately to other people’s emotions.

For example, someone may:

• Laugh when another person is upset
• Show little concern when a family member is suffering
• Ignore another person’s obvious discomfort
• Make insensitive comments
• Seem indifferent after hurting someone’s feelings
• Stop offering emotional support
• Fail to recognize that something they said was offensive

The family may interpret this as “They’ve become selfish” or “They don’t care about anyone anymore.”

But reduced empathy and difficulty reading social signals are recognized features of bvFTD.

This is particularly important when the change is new and progressive, rather than a lifelong personality characteristic.

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3. Inappropriate Behavior or Loss of Social Filters

Everyone occasionally says something awkward or behaves impulsively.

The warning sign is when inappropriate behavior becomes frequent, increasingly obvious, and out of character.

Examples might include:

• Making offensive jokes in serious situations
• Saying sexual or embarrassing things publicly
• Invading people’s personal space
• Touching objects or people inappropriately
• Ignoring social rules
• Spending money recklessly
• Taking things that don’t belong to them
• Saying whatever comes to mind without considering consequences

The frontal lobes help with judgment, planning, emotional regulation, and inhibition. Damage to these areas can therefore produce behavior that seems strangely impulsive or socially inappropriate.

A key clue

The person may not seem embarrassed by their behavior.

They may genuinely fail to understand why other people are upset.

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4. Repetitive or Compulsive Behaviors

Another easy-to-overlook sign is becoming unusually repetitive.

Someone might:

• Repeat the same question
• Repeat the same phrase
• Perform the same action repeatedly
• Follow an unnecessarily rigid routine
• Walk the same route repeatedly
• Arrange objects in a particular way
• Watch the same program repeatedly
• Develop unusual rituals

Repetition can happen in many conditions, so by itself it isn’t diagnostic. However, repetitive behavior combined with personality, judgment, or language changes can be significant.

Repetitive activities and repeated words or phrases are among the symptoms described in bvFTD.

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5. A Dramatic Change in Eating Habits

This is one of the more unusual clues.

A person may suddenly develop a strong preference for:

• Sweets
• Cakes and candy
• Highly processed foods
• Large quantities of food

They may also:

• Eat much more than before
• Eat extremely quickly
• Take food from someone else’s plate
• Eat the same foods repeatedly
• Put inappropriate things in their mouth

NIA specifically lists compulsive eating or taking food from other people’s plates among possible bvFTD symptoms.

Why this can be mistaken for aging

People may simply assume:

“Their diet has changed.”

But a major, unexplained change in food preferences or eating behavior occurring alongside personality changes deserves attention.

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6. Losing Interest in Things They Once Loved

This can look very much like depression.

A person may stop caring about:

• Hobbies
• Friends
• Family activities
• Work
• Personal projects
• Social events
• Sports
• Travel
• Maintaining relationships

They may spend hours sitting around and appear emotionally flat.

The important distinction is that FTD-related apathy may occur without the sadness, guilt, hopelessness, or emotional distress typically associated with depression.

NIA identifies becoming uninterested in family or activities that the person previously cared about as a possible symptom of bvFTD.

Because depression and FTD can look similar, professional evaluation is important rather than assuming either diagnosis.

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7. Poor Judgment With Money, Work, or Everyday Decisions

A person who has always managed finances responsibly may suddenly:

• Make reckless purchases
• Give money away
• Spend excessively
• Ignore bills
• Make bizarre financial decisions
• Fall for obviously inappropriate deals
• Lose the ability to prioritize important tasks
• Make repeated mistakes at work

The problem isn’t necessarily that they forget what to do.

Instead, they may lose the ability to determine what is sensible, important, or appropriate.

The frontal lobes are heavily involved in executive functions such as planning, sequencing, prioritizing, multitasking, decision-making, and correcting errors.

That’s why someone with early FTD can sometimes remember information yet make increasingly poor decisions.

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8. Language Starts Breaking Down

Not all FTD begins with behavioral changes.

Some forms primarily affect language, collectively referred to as primary progressive aphasia (PPA).

Early symptoms can include:

• Increasing difficulty finding words
• Using vague words such as “thing” or “that”
• Difficulty understanding certain words
• Trouble constructing sentences
• Speech that becomes increasingly effortful
• Difficulty reading
• Difficulty writing
• Using the wrong words
• Difficulty understanding what other people are saying

PPA involves progressive deterioration in the ability to use or understand language.

The important distinction

Everyone occasionally forgets a word.

A possible warning sign is when difficulty with language becomes persistent and progressively worse.

For example:

Normal:
“I know the word—I just can’t think of it right now.”

More concerning:
The person increasingly cannot name familiar objects, understand common words, construct sentences, or follow conversations.

Researchers are also investigating changes in speech as potential early indicators of frontotemporal degeneration.

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9. Difficulty Planning, Organizing, or Completing Familiar Tasks

Someone may suddenly struggle with things they have done successfully for years.

For example:

• Can’t organize a trip
• Can’t follow a familiar recipe
• Can’t prioritize work
• Starts tasks but doesn’t finish them
• Becomes overwhelmed by multiple steps
• Can’t manage household responsibilities
• Makes increasingly poor decisions about what needs to be done first

This can easily be blamed on:

“I’m getting older.”

But normal aging doesn’t generally cause a steady deterioration in the ability to organize everyday activities.

Planning, sequencing, prioritizing, and multitasking are among the functions controlled in part by the frontal lobes and can become impaired in FTD.

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10. The Person Doesn’t Seem Aware That Anything Is Wrong

This may be one of the most frustrating clues for families.

A spouse or child may see dramatic changes while the person says:

“Nothing is wrong with me.”

They may deny:

• Their inappropriate behavior
• Their financial mistakes
• Their personality change
• Their language difficulties
• Their declining work performance

In FTD, people can have limited awareness of their behavioral changes, and families may interpret this as stubbornness or denial. NIA notes that people with FTD may not recognize that their behavior is unusual or upsetting to others.

This doesn’t mean every person with FTD lacks insight, but reduced awareness can be an important part of the condition.

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What Makes FTD Different From “Just Getting Older”?

Normal aging can involve occasional:

• Forgetfulness
• Word-finding difficulty
• Misplacing things
• Poor decisions from time to time
• Slower learning of unfamiliar information

For example, occasionally forgetting someone’s name and remembering it later can occur with normal aging.

FTD is more concerning when there is a persistent change in behavior, personality, language, judgment, or executive function that progressively interferes with daily life.

A particularly important clue is the type of change.

This table is not a diagnostic test. A doctor has to consider the whole picture.

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Why FTD Is So Often Mistaken for Stress or Depression

FTD can be particularly difficult to recognize because the first symptoms aren’t always what people expect from “dementia.”

Someone may still:

• Remember names
• Remember childhood events
• Know where they are
• Hold a conversation
• Perform some familiar tasks

Yet their personality and judgment may be changing dramatically.

NIA notes that early FTD can be difficult to diagnose because its symptoms resemble other conditions, including mood disorders such as depression.

That’s why a person who suddenly becomes extremely apathetic, impulsive, socially inappropriate, emotionally detached, or unable to use language normally shouldn’t automatically be labeled as depressed, difficult, stressed, or simply “getting older.”

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When Should You Talk to a Doctor?

Consider arranging a medical evaluation when changes are:

1. New — noticeably different from the person’s previous personality or abilities.

2. Persistent — occurring repeatedly rather than once or twice.

3. Progressive — becoming more frequent or severe over weeks or months.

4. Functionally important — affecting relationships, work, finances, communication, safety, or daily activities.

5. Not fully explained by circumstances — the changes don’t make sense simply because of a temporary stressful event.

A doctor may review the person’s medical and family history, perform cognitive and neurological assessments, evaluate behavior and language, use laboratory testing to rule out other conditions, and sometimes order brain imaging or genetic testing.

A neurologist, geriatrician, psychiatrist, neuropsychologist, or other clinician experienced with cognitive disorders may be involved depending on the symptoms.

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Don’t Assume Every Personality Change Is FTD

This is extremely important.

Many potentially treatable conditions can cause changes in memory, mood, behavior, concentration, or language.

Possible contributors include:

• Depression
• Anxiety
• Severe sleep problems
• Medication effects
• Alcohol or substance use
• Thyroid abnormalities
• Vitamin deficiencies
• Other neurological diseases
• Certain psychiatric disorders
• Other forms of dementia

FTD is relatively uncommon, and symptoms overlap with numerous other conditions.

So the goal isn’t to diagnose yourself or a family member from a symptom list.

The goal is to recognize when a pattern deserves professional assessment.

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One of the Most Important Clues: “This Isn’t Like Them”

Families often notice FTD before the person recognizes anything is happening.

They may say:

“He’s become a completely different person.”

“She used to be incredibly compassionate, and now she seems indifferent.”

“He’s making decisions he would never have made before.”

“She isn’t forgetting everything—she’s just behaving differently.”

“His speech keeps getting worse.”

Those observations can be valuable information for a clinician.

Keeping a simple record of when the changes began, what changed, how frequently it happens, and how it affects daily life can make a medical appointment much more useful.

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The Bottom Line

The early warning signs of frontotemporal dementia aren’t necessarily dramatic memory failures.

They can be personality changes, loss of empathy, inappropriate behavior, compulsive habits, altered eating, apathy, poor judgment, organizational problems, or progressive language difficulties.

And unlike ordinary stress or occasional age-related lapses, FTD tends to produce a progressive change from the person’s previous baseline.

If you or someone close to you is experiencing several of these changes, especially if they are worsening, it’s worth discussing them with a healthcare professional rather than simply assuming they’re caused by stress or normal aging.

One symptom doesn’t diagnose FTD. A pattern of progressive changes does deserve attention.