Heat Stroke & Hypothermia

What happens physiologically when you enter cold water, the four phases of cold water immersion, what actions improve survival, and how to help someone who has been rescued from cold water.

How to identify frostbite at different stages, what to do in the field to prevent further damage, and when and how to rewarm frostbitten tissue.

How to identify the three levels of heat illness, what distinguishes heat exhaustion from heat stroke, and the correct treatment for each.

Distinguish heat exhaustion from heat stroke, apply emergency cooling, recognise and treat hypothermia with correct rewarming, and understand the long-term dangers of untreated temperature emergencies.

Side-by-side recognition guide for heat stroke, heat exhaustion, mild hypothermia, and severe hypothermia — with response steps and when to call emergency services.

How to recognise and classify hypothermia, what field rewarming is appropriate, and the critical mistakes that can cause cardiac arrest during rescue.