{"id":7708,"date":"2026-09-26T23:56:55","date_gmt":"2026-09-26T23:56:55","guid":{"rendered":"https:\/\/www.visiting-angels.co.uk\/cheshire-east\/?p=7708"},"modified":"2026-09-27T00:04:37","modified_gmt":"2026-09-27T00:04:37","slug":"sudden-confusion-in-older-people","status":"publish","type":"post","link":"https:\/\/www.visiting-angels.co.uk\/cheshire-east\/sudden-confusion-in-older-people\/","title":{"rendered":"Sudden confusion is not always dementia"},"content":{"rendered":"\t\t
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Quick summary<\/b><\/h3>

If someone becomes confused over hours or a day or two rather than over months, that is usually delirium, not dementia. Common causes include infection, dehydration and medication. It is often treatable, and it needs urgent medical help. The NHS advice is to go to A and E or call 999 if someone suddenly becomes confused.<\/span><\/p>

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What is delirium?<\/b><\/h3>

A sudden change in someone’s mental state. They may be unable to think or speak clearly, not know where they are, struggle to pay attention, or see and hear things that are not there (<\/span>NHS, Sudden confusion<\/span><\/a>).<\/span><\/p>

Some people become agitated and restless. Others become quiet, drowsy and withdrawn, which is easier to miss because it does not look like confusion. Symptoms often change through the day and are frequently worse in the evening and at night.<\/span><\/p>

Delirium is common in older people, particularly those who already have dementia, and in people who are unwell or in hospital.<\/span><\/p>

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Delirium or dementia?<\/b><\/h3>

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Delirium<\/b><\/p><\/th>

Dementia<\/b><\/p><\/th><\/tr><\/thead>

How it starts<\/b><\/p><\/td>

Suddenly, over hours or a day or two<\/span><\/p><\/td>

Gradually, over months or years<\/span><\/p><\/td><\/tr>

How it changes<\/b><\/p><\/td>

Comes and goes through the day<\/span><\/p><\/td>

Steady, slowly getting worse<\/span><\/p><\/td><\/tr>

Attention<\/b><\/p><\/td>

Very poor, drifting in and out<\/span><\/p><\/td>

Usually fairly normal in the early stages<\/span><\/p><\/td><\/tr>

Usual cause<\/b><\/p><\/td>

An illness, infection, medicine or other trigger<\/span><\/p><\/td>

A progressive condition of the brain<\/span><\/p><\/td><\/tr>

Outlook<\/b><\/p><\/td>

Often improves once the cause is treated<\/span><\/p><\/td>

Progressive<\/span><\/p><\/td><\/tr>

What to do<\/b><\/p><\/td>

Urgent medical help<\/span><\/p><\/td>

A GP appointment<\/span><\/p><\/td><\/tr><\/tbody><\/table>

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The two can happen together. Someone with dementia can develop delirium on top, and it can look like their dementia has suddenly got much worse. <\/span>The question to ask is whether they are more confused than they were a few days ago.<\/b> Families usually notice this before anyone else.<\/span><\/p>

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What should I do?<\/b><\/h3>

The NHS is direct about this. Go to A and E or call 999 if someone suddenly becomes confused, because many causes need to be assessed and treated as soon as possible, and sometimes they can be life threatening. Do not drive them to A and E yourself if that is not safe. Take their medicines, or a list of them, with you (<\/span>NHS<\/span><\/a>).<\/span><\/p>

The NHS suggests a simple check: ask the person their name, their age and today’s date. If they seem unsure or cannot answer, they probably need medical help.<\/span><\/p>

If the change has been gradual, over months, that is a GP appointment rather than an emergency.<\/span><\/p>

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While you wait<\/b><\/h3>

The NHS gives practical advice for this.<\/span><\/p>

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