Hypothermia is a dangerous drop in body temperature below 35C (normal body temperature is around 37C). It's a medical emergency that needs to be treated in hospital.

Check if it’s hypothermia

Symptoms of hypothermia include:

A baby with hypothermia may be:

Immediate action required: Go to A&E or call 999 if:

  • you think you or your child have hypothermia

Find your nearest A&E

What to do while you're waiting for help for hypothermia

If you think someone has hypothermia, there are things you can do while waiting for medical help.


  • move the person indoors or somewhere sheltered as quickly as possible

  • remove any wet clothing, wrap them in a blanket, sleeping bag or dry towel, making sure their head is covered

  • give them a warm non-alcoholic drink and some sugary food like chocolate if they're fully awake

  • keep them awake by talking to them until help arrives

  • make sure you or someone else stays with them

There are things you should not do because they will not help and could make things worse.


  • do not use a hot bath, hot water bottle or heat lamp to warm them up

  • do not rub their arms, legs, feet or hands

  • do not give them alcohol to drink

Treatment in hospital for hypothermia

If you have hypothermia, you’ll usually be treated in hospital.

Your heart rate will be monitored and you may be given oxygen to help you breathe.

You may also be given warm fluids straight into a vein to help your body warm up.

Treatment in intensive care may be needed if you have severe hypothermia.

Causes of hypothermia

Hypothermia happens when you get too cold and your body temperature drops below 35C.

You can get hypothermia if you:

Page last reviewed: 9 June 2023
Next review due: 9 June 2026