- Delirium is an acute change in attention, awareness or thinking that often fluctuates through the day.
- It can be triggered by infection, dehydration, constipation, urinary retention, medicines, pain, surgery or metabolic problems.
- A person with dementia can still develop delirium; a sudden change from baseline is the key clue.
Why this deserves attention
Sudden confusion over hours or days is not normal ageing. Infection, medicines, dehydration, pain or other acute illness needs prompt assessment.
The same symptom can have several causes. Useful clues include how quickly it changed, how severe it is, what comes with it, personal risk factors and whether it is clearly different from your normal baseline.
What to observe
Note the exact baseline change, when it began, fever, urine/bowel changes, falls, pain, new medicines and whether the person is eating and drinking.
Write down when symptoms happen, how long they last, triggers, changes in normal function and medicines or supplements already taken. A short record often makes a consultation more useful.
Sensible next steps
Arrange prompt medical assessment rather than assuming the person is “just getting old” or simply more forgetful.
Medical assessment and where TCM fits
Treatment focuses on finding and correcting the trigger while supporting hydration, orientation, sleep, mobility and safety.
TCM should not delay assessment of acute confusion. Herbs can contribute to interactions or sedation, so disclose all products taken.
TCM and conventional care can sometimes complement each other, but acute red flags, conditions needing imaging or blood tests, and diseases with established evidence-based treatment require diagnosis and safety to come first.
When not to wait
New severe confusion, inability to wake normally, stroke signs, seizure, severe breathlessness, chest pain or rapidly worsening illness requires urgent emergency care.
Related reading & Singapore resources
This page provides general health education, not an individual diagnosis or emergency plan. Sudden, severe, worsening or red-flag symptoms should be assessed through appropriate conventional medical or emergency care.