Hypothermia happens when the body becomes too cold. It can occur outdoors in winter, during hiking or camping trips, in cold water, in poorly heated homes, or after long exposure to wind and rain. Knowing simple first aid steps can help support someone while you decide whether further help is needed.
This guide explains early signs of hypothermia, first aid steps, prevention tips and what to keep in your first aid kit for cold-weather conditions.
For outdoor preparation, see our hikers & walkers first aid guide.
Hypothermia happens when the body’s temperature drops too low due to cold conditions. It can develop slowly or quickly and affects people of all ages.
| Stage | Common Signs | Typical Causes |
|---|---|---|
| Mild Hypothermia | Shivering, cold skin, tiredness, slow movements. | Cold weather, wet clothing, long outdoor exposure. |
| Moderate Hypothermia | Shivering may decrease, confusion, slurred speech. | Wind chill, rain, being outdoors for long periods. |
| Severe Hypothermia | Very slow responses, stiff muscles, extreme coldness. | Cold-water exposure, prolonged low temperatures. |
If someone appears cold and is showing signs of hypothermia, you can:
For cold-weather vehicle preparation, see our winter car first aid guide.
To restock, browse our full range of first aid kits or see our first aid kit refills guide.
For caravan and motorhome safety, see our caravan and motorhome first aid guide.
Explore our most popular first aid kits for home, car, travel, family trips, camping, workplace and everyday emergencies.
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