Very little urine, confusion, severe weakness, a fast pulse and inability to drink are warning signs.
Dry mouth and thirst may be early signs. Markedly reduced urine, drowsiness or confusion, severe dizziness, a fast pulse and inability to keep fluids down need urgent assessment. Children, older adults and people with chronic illness are at risk sooner.
Medical principle
In emergencies, the aim is to recognise danger and obtain professional care quickly, not to diagnose at home. Symptom onset, underlying conditions and medicines are important information for the care team.
Practical steps that may help
- Note the exact time symptoms began and call local emergency services.
- Do not leave the person alone; give nothing to eat or drink if awareness is reduced.
- Prepare the list of medicines, allergies and underlying conditions for the care team.
When should you seek medical care?
Altered awareness, stroke signs, chest pain, severe breathlessness, substantial bleeding, anaphylaxis and severe dehydration require immediate action, not a routine appointment.
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