Dementia symptoms (NHS)

Tier 1: Established: peer-reviewed research or government health authority
Publisher: National Health Service · Published: August 21, 2026 · Accessed: August 21, 2026

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Claims this source supports

• Dementia symptoms include memory loss, difficulty concentrating, difficulty following a conversation, confusion about time and place, and mood changes; symptoms vary by type and progress over time.
• As dementia progresses, memory loss and difficulties with communication often become severe; in later stages the person may not recognise close family and friends, or remember where they are, and is likely to require constant care and attention.
• Early symptoms of some dementia types include personality changes, reduced sensitivity to others' feelings, and language problems.