Treating Heat Exhaustion Safely and Quickly

Heat exhaustion can develop quietly on a construction site, during school sport, in a vehicle queue or while working outdoors in Abu Dhabi’s summer temperatures. Treating heat exhaustion promptly can prevent a serious deterioration into heatstroke, which is a medical emergency. The priority is straightforward: stop the heat exposure, begin cooling, give appropriate fluids only when it is safe, and keep a close watch on the person.

Heat illness is not limited to people working in direct sun. High humidity, poor airflow, heavy protective clothing, physical exertion, dehydration and inadequate rest can all reduce the body’s ability to cool itself. Employers, schools, event teams and families should know the first aid response before a casualty becomes confused, collapses or loses consciousness.

Recognise heat exhaustion early

Heat exhaustion occurs when the body loses excessive water and salt through sweating and cannot regulate its temperature effectively. A person may look unwell but still be alert and able to communicate. Common signs include heavy sweating, thirst, headache, dizziness, weakness, nausea, muscle cramps and cool, pale or clammy skin. Their pulse may be fast, and they may become irritable or struggle to concentrate.

The symptoms can be mistaken for fatigue, hunger or a simple headache, particularly in busy workplaces. That is why supervisors and first aiders should take complaints seriously when conditions are hot. Do not ask someone showing these signs to finish a task, walk back to accommodation alone or continue training after a brief drink.

Heat exhaustion and heatstroke sit on the same spectrum, but the distinction matters. Confusion, altered behaviour, collapse, seizures, loss of consciousness or a very high body temperature suggest possible heatstroke. Treat this as an emergency, even if the person is still sweating. Do not wait for every textbook sign to appear.

Treating heat exhaustion step by step

Move the person immediately to a cool, shaded and well-ventilated area. Air conditioning is preferable where available. Stop physical activity, loosen or remove unnecessary outer clothing and equipment, and help them lie down. Raising their legs slightly may help if they feel faint, provided it does not make them uncomfortable or affect their breathing.

Begin active cooling. Use cool water to wet or spray the skin, then fan the person to encourage evaporation. Cool wet cloths can be placed on the skin and changed regularly. Cold packs wrapped in cloth may be placed at the neck, armpits and groin, but never apply ice directly to bare skin. The aim is steady cooling without causing discomfort or skin injury.

If the casualty is fully awake, able to swallow and not vomiting, offer cool water or an oral rehydration drink in small, frequent sips. Drinking too much too quickly can worsen nausea. Sports drinks may be suitable in some circumstances, but water and a properly prepared oral rehydration solution are generally more reliable first aid options. Do not give alcohol, and avoid relying on highly caffeinated drinks. Salt tablets should not be given unless directed by a medical professional.

Stay with the person throughout. Reassure them, observe their breathing and level of responsiveness, and ask simple questions to check that they remain orientated. Record when symptoms started, what activity they were doing, how long they were exposed to heat and the care provided. This information supports handover if medical assessment is required and helps an organisation identify operational causes such as poor rest scheduling, inadequate water access or unsuitable PPE arrangements.

A person with heat exhaustion should not return to work, sport or outdoor activity on the same day. Even when they feel better, their tolerance to heat may remain reduced. They need rest, continued fluids and protection from further heat exposure.

When to call for urgent help

Call emergency services without delay if the person has confusion, fainting, seizures, loss of consciousness, severe breathlessness, chest pain or cannot safely drink. In the UAE, ambulance services can be reached on 998. Continue cooling while help is arranged.

Urgent medical assessment is also needed if symptoms worsen at any point or do not improve within about 30 minutes of cooling and rehydration. Treat this as possible heatstroke rather than simply persistent heat exhaustion. A casualty who is vomiting repeatedly, has a relevant heart or kidney condition, is pregnant, is very young or elderly, or takes medicines that affect hydration or temperature control may need earlier clinical advice.

If the person becomes unresponsive but is breathing normally, place them in the recovery position and keep cooling measures in place where practical. If they are not breathing normally, start CPR and use an AED if one is available, while another person calls for emergency help. Do not give fluids to anyone who is drowsy, confused, unconscious or unable to swallow reliably.

Common mistakes that increase risk

The most damaging mistake is delaying action because the person says they are fine. People affected by heat may minimise symptoms to avoid stopping work, letting down a team or missing an event. A clear escalation culture gives staff permission to speak up early and gives supervisors authority to stand them down.

Another mistake is sending a casualty to rest alone in a car, washroom or accommodation unit. Their condition can decline quickly, and no one may notice confusion or loss of consciousness. Keep them supervised until they are clearly recovering or handed over to medical professionals.

It is also unwise to use a single response for every heat-related complaint. Someone who is alert, sweating and improving with cooling may be managed as heat exhaustion. Someone whose behaviour is unusual, whose speech is confused or whose condition is deteriorating needs emergency treatment for suspected heatstroke. When there is uncertainty, act on the more serious possibility.

Prevention is part of the first aid plan

First aid is the last line of defence, not the entire heat management system. In workplaces, prevention should combine planned work-rest cycles, accessible cool drinking water, shaded recovery areas, suitable clothing, acclimatisation for new or returning workers and supervision that responds to changing conditions. The right controls depend on the task: a security officer in body armour, a road crew in direct sun and a warehouse team in a humid loading bay face different exposures.

Organisations should also consider whether staff can recognise symptoms in colleagues, whether drinking water is genuinely within reach, and whether first aid equipment is positioned where heat incidents are likely to happen. Heat plans are only effective when teams can follow them under operational pressure.

For schools and families, the same principles apply. Build water breaks into outdoor activity, reduce exertion during the hottest periods, and watch children closely because they may not identify thirst or dizziness early. Never leave a child or vulnerable adult in a parked vehicle, even briefly.

Practical first aid training gives teams the confidence to make these decisions calmly, use cooling methods correctly and escalate without hesitation. Lifesaver Abu Dhabi supports organisations and communities with scenario-based training that turns written procedures into capable action.

A hot day should not become a preventable emergency. Make cooling, hydration, supervision and early escalation routine, so that when the first signs appear, your people know exactly what to do.