Dementia is not an inevitable part of ageing
Dementia: Signs, Assessment and Daily Care
Dementia affects memory, thinking, communication and everyday activities. Different diseases can cause it, and symptoms usually worsen over time.
Sudden confusion over hours or days is not typical gradual dementia and may be a medical emergency caused by infection, stroke, medicines or another illness.
Changes that need assessment
- Repeatedly forgetting recent events or conversations
- Getting lost in familiar places or losing track of time
- Difficulty managing money, medicines, cooking or familiar tasks
- Problems finding words, following conversation, planning or making decisions
- Changes in mood, judgement, personality or social behaviour
Why medical assessment matters
A clinician can review the pattern and check for conditions that may mimic or worsen memory problems, including depression, hearing or vision loss, thyroid problems, infection, stroke, sleep problems and medicine effects.
- Bring a medicines list and examples of changes
- Ask about safety with driving, cooking, money and living alone
- Discuss legal, financial and care preferences early while the person can participate
Safer daily support
- Keep routines, labels, clocks and lighting clear and familiar
- Use one instruction at a time and allow extra time to respond
- Check food, fluids, pain, constipation, hearing, vision and sleep
- Secure medicines, dangerous tools and exits when wandering is a concern
- Protect dignity; involve the person in choices and meaningful activities
Urgent changes
Seek urgent medical care for sudden confusion, new weakness or facial droop, fever, a fall or head injury, seizure, inability to wake, severe dehydration, or immediate risk of harm.
Related guides
Sources and review
How this guide was prepared
Prepared by the Dr H N Roy Mental Health Awareness Initiative editorial team from the public-health sources below. Last editorial review: 14 September 2026.
Medical-review status: General educational content; no individual clinical reviewer is named. Do not use this page as diagnosis or personalised medical advice.
- World Health Organization: Dementia
- World Health Organization: Interventions for carers of people with dementia
- Government of India: Emergency Response Support System 112