Dementia does not look the same from one person to another.
Understanding these differences is essential for reducing confusion, stress, and resistance in everyday care.
What may appear as difficult behaviour is often the result of changes in how the brain processes information, regulates emotions, and responds to the environment.
This guide explains how dementia commonly presents across different diagnoses — and what this means in practice.
Frontotemporal Dementia (FTD)
In frontotemporal dementia, early changes often affect:
- Behaviour and impulse control
- Social awareness
- Emotional regulation
- Language (in some variants)
Memory may appear relatively preserved in the early stages.
Difficult situations are often related to reduced executive control, not forgetfulness.
Behaviour can appear intentional, but is driven by changes in the brain.
This often leads to:
- socially inappropriate behaviour
- reduced empathy
- difficulty adjusting actions to the situation
→ Explore FTD communication strategies
Alzheimer’s Disease
In Alzheimer’s disease, early changes often involve:
- Memory
- Orientation
- Word finding
- Learning new information
As processing capacity decreases, the person may struggle to understand what is happening and what is expected.
This often leads to:
- hesitation or withdrawal
- repeated questions
- increased need for guidance
Structure, predictability, and step-by-step support become increasingly important.
→ Explore Alzheimer’s communication strategies
Dementia with Lewy Bodies (DLB)
In dementia with Lewy bodies, changes may include:
- Fluctuating attention
- Visual hallucinations
- Slowed movement
- Sensory misinterpretation
Function can vary significantly throughout the day — sometimes from hour to hour.
This often leads to:
- sudden confusion
- misinterpretation of surroundings
- periods of clarity followed by disorientation
Communication needs to adjust to the person’s current level of attention and perception.
→ Explore Lewy body dementia communication strategies
Why Understanding These Differences Matters
When we misunderstand what is happening, we often respond in ways that increase stress.
- We may push when the person cannot process
- We may correct when the person cannot understand
- We may expect consistency where fluctuation is the condition
When we understand how dementia presents, we can adjust our approach.
Care becomes more predictable, more supportive, and more effective.
What This Means in Everyday Care
Across all dementia types, certain principles remain central:
- Slow down communication
- Use clear and simple language
- Support step by step
- Reduce unnecessary stimuli
- Adjust expectations to the person’s current function
Small adjustments in how we communicate can significantly reduce resistance and improve cooperation.
Explore Practical Communication Guides
Understanding dementia is the first step.
Knowing what to do in real situations is the next.
Explore detailed, practical guides:
- How to respond when a person refuses help
- How to reduce repeated questions
- How to create calm and safe interactions
→ Explore all dementia care guides
Frequently Asked Questions
Why does dementia look different from person to person?
Because different types of dementia affect different parts of the brain, leading to variations in behaviour, memory, and communication.
Why does someone with dementia suddenly change behaviour?
Changes in behaviour are often linked to reduced processing ability, stress tolerance, or executive function — not intentional actions.