20/07/2026
If your mum or dad suddenly becomes confused overnight, please do not just assume it is “the dementia getting worse”.
A sudden change over a day or two, more confusion, agitation, or simply “not themselves”, is often delirium, not a step down in dementia. And one of the most common, most treatable causes is a urinary tract infection. In older people a UTI often shows up as confusion long before any of the usual symptoms. It gets missed again and again because everyone assumes it is just the dementia.
If you notice a sudden change, here is what to do:
Ask for an infection and UTI check, a urine test and basic observations.
Note exactly when the change started. Sudden really matters, tell whoever assesses them.
Push for a review. Delirium is a medical event, not a mood, and it needs looking at.
Caught early, many people come back to themselves. Left unchecked, it can be mistaken for rapid decline.
Save this so you have it when you need it, and send it to anyone caring for an older parent. It is the kind of thing families tell us they wish they had known sooner.
Has this happened in your family, a sudden confusion that turned out to be an infection? Share your experience below, it helps other families spot it.
This is general information, not a diagnosis. If you are worried about someone, always seek medical advice.
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