Heat exhaustion is not just a minor inconvenience—it can escalate quickly into a dangerous heat stroke if not properly addressed. As temperatures soar during the summer months, understanding how to spot and treat heat exhaustion takes on greater importance.
Here, we will guide you through the symptoms, treatment, and prevention of heat exhaustion, helping you keep yourself and others safe.
Understanding Heat Exhaustion
Heat exhaustion occurs when the body overheats due to prolonged exposure to high temperatures, especially when combined with high humidity and physical activity. It is part of a spectrum of heat-related illnesses, starting from mild heat cramps to severe heat stroke.
Causes of Heat Exhaustion
The main causes of heat exhaustion include:
- Prolonged exposure to high temperatures.
- High humidity which impedes sweat evaporation.
- Physical exertion under the sun.
- Understanding these factors can help mitigate the risk of heat exhaustion.
Recognising Heat Exhaustion Symptoms
Recognising the signs of heat exhaustion can be lifesaving. The primary symptoms include:
- Heavy sweating
- Weakness or fatigue
- Dizziness and headache
- Muscle cramps
- Nausea or vomiting
- Pale skin
- Rapid heartbeat
Distinguishing Between Heat Exhaustion and Heat Stroke
While both conditions are serious, heat stroke is more severe and requires immediate medical attention. It is characterised by:
- A body temperature of 104°F (40°C) or higher.
- Possible unconsciousness.
- Absence of sweating despite hot temperatures.
- Neurological symptoms like seizures or confusion.
How to Treat Heat Exhaustion
If you or someone else shows symptoms of heat exhaustion, consider the following steps:
- Move to a cooler, shaded area immediately.
- Drink plenty of water or sports drinks to rehydrate.
- Remove any excess clothing and apply cool, wet cloths to the skin.
- If symptoms worsen or last longer than one hour, seek medical help.
Recognising and treating heat exhaustion promptly can prevent the condition from escalating into a heat stroke. By staying informed and prepared, you can enjoy the warm weather safely and help others do the same.
The best way to learn how to deal with ailments such as heat exhaustion is to take one of our outdoor first aid courses. These courses are designed to address all the common first aid scenarios that can occur in the outdoors, such as frostbite, hypothermia, bites, stings, head injuries and much more.



