What Is Heat Stroke?
Heat stroke is a severe heat-related illness that occurs when the body’s temperature regulation system fails, causing the body temperature to rise rapidly, often above 40°C (104°F). It is a medical emergency that requires immediate treatment.
Common symptoms of heat stroke include:
- High body temperature
- Hot, dry skin or excessive sweating
- Rapid heartbeat
- Headache
- Dizziness or confusion
- Nausea and vomiting
- Loss of consciousness
Without prompt treatment, heat stroke can lead to organ damage, disability, or even death.
What Is Dehydration?
Dehydration occurs when the body loses more fluids than it takes in. During hot weather, the body sweats more to stay cool, increasing fluid loss. If these fluids are not replaced, dehydration can develop.
Signs of dehydration include:
- Thirst
- Dry mouth and lips
- Dark-colored urine
- Fatigue or weakness
- Dizziness
- Muscle cramps
- Reduced urination
Severe dehydration may require medical attention and can become life-threatening if left untreated.
Who Is Most at Risk?
While anyone can experience heat-related illnesses, certain groups face greater risks:
- Outdoor workers and construction personnel
- Athletes and people engaging in strenuous activities
- Older adults
- Infants and young children
- Individuals with heart disease, diabetes, or other chronic conditions
- People taking medications that affect hydration or temperature regulation
Tips to Prevent Heat Stroke and Dehydration
1. Stay Hydrated
Drink water regularly throughout the day, even if you do not feel thirsty. During prolonged outdoor activities, consider beverages that replace electrolytes lost through sweating.
Hydration tips:
- Carry a refillable water bottle.
- Drink before, during, and after outdoor activities.
- Limit sugary, caffeinated, and alcoholic beverages, which may contribute to dehydration.
2. Dress for the Weather
Wear lightweight, loose-fitting, and light-colored clothing that allows sweat to evaporate and helps keep your body cool.
Recommended clothing includes:
- Breathable cotton or moisture-wicking fabrics
- Wide-brimmed hats
- Sunglasses with UV protection
3. Avoid Peak Heat Hours
The sun is typically strongest between 10:00 a.m. and 4:00 p.m. Whenever possible, schedule outdoor tasks and exercise during the early morning or evening hours.
4. Take Frequent Breaks
If you work or exercise outdoors, rest regularly in shaded or air-conditioned areas. Allow your body time to cool down and replenish lost fluids.
5. Use Sun Protection
Apply a broad-spectrum sunscreen with an SPF of at least 30. Sunburn can impair the body’s ability to regulate temperature and increases the risk of dehydration.
6. Monitor Weather Conditions
Pay attention to heat advisories and weather forecasts. High humidity can make it more difficult for the body to cool itself through sweating.
What to Do If Someone Shows Signs of Heat Stroke
Heat stroke is a medical emergency. Take immediate action:
- Call emergency medical services immediately.
- Move the person to a cool or shaded area.
- Remove unnecessary clothing.
- Cool the person using cold water, wet towels, fans, or ice packs applied to the neck, armpits, and groin.
- Do not give fluids if the person is unconscious or confused.
Prompt treatment can significantly reduce the risk of serious complications.
Staying Safe at Work
Employees working in hot environments should follow workplace heat-safety practices:
- Drink water frequently.
- Take scheduled rest breaks.
- Use shaded or cooled rest areas.
- Wear appropriate personal protective equipment (PPE).
- Watch for signs of heat stress in coworkers.
- Report symptoms immediately to supervisors.
Employers should promote heat awareness and ensure workers have access to water, rest, and shade.
