Dehydration happens when someone loses more fluid than they take
Young children and older people are likely to get dehydrated
more easily, so it’s especially important for them to drink plenty
Someone will normally get dehydrated after sweating a lot ‒
usually from exercise, being in hot conditions for a long time, or
having a fever.
If you lose fluids through severe diarrhoea and vomiting, this
can also cause dehydration.
If left untreated, someone with dehydration can develop heat
exhaustion, which is more serious, so it’s important to make sure
they rehydrate themselves as soon as possible.
Watch our video - dehydration
What to look for - dehydration
There are four key things to look for if someone is suffering
- 1 .Headaches and light headedness
- 2 .Dry mouth, eyes and lips
- 3 .Small amounts of dark urine
- 4. Muscle cramps
What you need to do - dehydration
Treating dehydration, next steps:
• Help them to sit down and give them plenty of water to
• Giving them an oral rehydration solution to drink will
help replace salt and other minerals which they’ve lost – you can
buy this in sachets from any pharmacy.
• If they have any painful cramps, encourage them to rest,
help them stretch and massage their muscles that hurt.
• Keep checking how they’re feeling – if they still feel
unwell once they’re rehydrated then encourage them to see a doctor