Quick read
Key points
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Frontotemporal dementia is a less common type of dementia caused by damage to the front and side parts of the brain, which control personality, behaviour, and language. Unlike Alzheimer's disease, memory is often relatively preserved in the early stages, while changes in behaviour, personality, or language tend to be the first noticeable signs.
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Topic-specific prevention and risk reduction will be added during the article-specific evidence audit.
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You or a family member notice significant changes in personality, behaviour, or social conduct
01 · Know
What is Frontotemporal Dementia?
Frontotemporal dementia is a less common type of dementia caused by damage to the front and side parts of the brain, which control personality, behaviour, and language. Unlike Alzheimer's disease, memory is often relatively preserved in the early stages, while changes in behaviour, personality, or language tend to be the first noticeable signs.
It typically develops at a younger age than other forms of dementia, often between 45 and 65, which can make diagnosis more difficult, since symptoms can initially be mistaken for a mental health condition or simply personality change. While there's no cure, support and management strategies can help with specific symptoms and quality of life.
02 · Understand
Clinical context
Behaviour and personality changes often appear before memory problems
Because frontotemporal dementia often affects personality and behaviour before memory, it can initially be mistaken for depression, a personality change, or a mental health condition — a specialist assessment helps reach an accurate diagnosis.
03 · Act
When to Seek Assessment
- 1You or a family member notice significant changes in personality, behaviour, or social conduct
- 2There are changes in language, such as difficulty finding words or understanding speech
- 3These changes are affecting relationships, work, or daily functioning
- 4A diagnosis has been made and you have questions about support and management
04 · Prevent & manage
Practical steps
Behaviour Changes Are Part of the Condition, Not a Choice
Personality or behaviour changes in frontotemporal dementia result from brain changes, not a person's choices or character — understanding this can help families respond with patience rather than frustration.
- 1Seek a specialist assessment for an accurate diagnosis.This helps distinguish it from other conditions with similar early symptoms.
- 2Maintain consistent routines.Predictability can help manage behavioural symptoms and reduce distress.
- 3Connect with dementia support services.These offer practical guidance specific to the challenges of frontotemporal dementia.
- 4Access carer support.Supporting someone with significant personality or behaviour changes can be particularly challenging — dedicated support exists.
- 5Plan ahead where possible.Given the younger age of onset, planning for financial, legal, and care needs early can ease later challenges.
Evidence
References
BarnMD Health Intelligence uses authoritative and clinically relevant sources appropriate to the topic. References are shown so readers can inspect the evidence directly.
- HSE: Frontotemporal dementia ↗
Medical information notice
Health education, not individual medical advice
BarnMD Health Library provides general health education for public health literacy. Reading this article does not establish a doctor-patient relationship and this information is not a diagnosis, prescription, or personalised treatment plan. If you have symptoms or concerns about your health, seek appropriate advice from a qualified healthcare professional. If you develop emergency warning signs, seek urgent or emergency medical attention.
BarnMD Bottom Line
Frontotemporal dementia is a distinct condition, often affecting younger people, and specialist support helps manage its particular challenges.
Personality and behaviour changes are a result of brain changes, not choices — understanding this supports a more compassionate approach.