Summer Heat Emergencies: Recognizing Heat Exhaustion and Heat Stroke

Late summer can bring some of the year's hottest and most humid conditions. Even as attention turns toward the beginning of the school year and fall activities, dangerous heat can remain a serious public safety concern.

Heat-related illness can affect anyone, particularly during outdoor work, sports, community events, exercise, or prolonged exposure to hot environments.

Recognizing the warning signs—and knowing when a situation has become a medical emergency—can save a life.

How Heat Affects the Body

The human body normally regulates temperature through mechanisms that include sweating and increased blood flow near the skin.

During extreme heat, especially when humidity is high, the body's ability to cool itself can become overwhelmed. Physical activity, dehydration, certain medications, heavy clothing, and prolonged sun exposure can increase the risk.

Older adults, young children, outdoor workers, athletes, and people with certain medical conditions may be especially vulnerable, but serious heat illness can occur in otherwise healthy people as well.

Recognizing Heat Exhaustion

Heat exhaustion can develop when the body loses excessive water and salt through sweating.

Warning signs may include:

1. Heavy sweating

2. Weakness or unusual fatigue

3. Dizziness

4. Headache

5. Nausea or vomiting

6. Muscle cramps

7. Cool, pale, or clammy skin

8. A rapid pulse

9.  

Someone showing signs of heat exhaustion should stop strenuous activity and move to a cooler environment.

Loosen unnecessary clothing and use cool, wet cloths or other appropriate cooling methods. If the person is fully alert and able to swallow normally, fluids may be appropriate.

Monitor the person closely. Worsening symptoms can indicate a more serious emergency.

Heat Stroke Is a Medical Emergency

Heat stroke is the most dangerous form of heat-related illness. It occurs when the body's temperature-control system fails and body temperature rises rapidly.

Possible warning signs include:

1. Confusion or altered behavior

2. Loss of consciousness

3. Seizures

4. Very high body temperature

5. Hot skin

6. Rapid breathing or pulse

A person experiencing heat stroke may sweat heavily or may have dry skin, so the presence or absence of sweating should not be used to rule out the condition.

Suspected heat stroke requires immediate emergency medical attention.

Call 911 and begin rapid cooling while waiting for emergency medical services. Move the person away from the heat, remove unnecessary outer clothing, and use available cooling methods.

Do not force fluids on someone who is confused, unconscious, having a seizure, or unable to swallow safely.

Prevention Starts Before Exposure

Many heat emergencies can be prevented by planning ahead.

Check weather conditions before outdoor activities and consider both temperature and humidity. Schedule strenuous activities during cooler parts of the day whenever possible.

Drink fluids regularly rather than waiting until severe thirst develops. Take breaks in shaded, air-conditioned, or otherwise cooler locations.

People working or exercising in hot environments may also need time to gradually become accustomed to the heat rather than immediately performing prolonged strenuous activity.

Never Leave Someone in a Parked Vehicle

The temperature inside a parked vehicle can rise dangerously fast.

Never leave a child, older adult, person with limited mobility, or pet unattended inside a vehicle in warm weather—even when the windows are partially open or the stop is expected to be brief.

Before walking away from a vehicle, develop the habit of checking the entire passenger compartment.

Heat Safety at Schools, Sports, and Community Events

Late August often means the return of athletic practices, school activities, outdoor training, festivals, and community events.

Coaches, supervisors, parents, and event organizers should watch participants for unusual fatigue, confusion, poor coordination, dizziness, or other signs of heat illness.

Access to drinking water, cooling areas, rest periods, and emergency medical equipment should be considered before activities begin.

Organizers should also have a clear method for contacting emergency services and directing responders to the patient's location.

Know When to Call 911

1. Do not assume that someone experiencing significant heat illness simply needs to "cool off."
2. Confusion, collapse, seizures, loss of consciousness, or other signs of serious illness require immediate action.
3. If you suspect heat stroke, call 911 and begin cooling the person while professional help is on the way.
4. Early recognition and rapid action are critical.

Heat Emergency Preparedness Takeaways

1. Check heat and humidity before strenuous outdoor activities.

2. Drink fluids regularly and schedule appropriate rest periods.

3. Use shaded or air-conditioned areas for cooling breaks.

4. Recognize dizziness, nausea, weakness, heavy sweating, and headache as potential warning signs.

5. Treat confusion, collapse, seizures, or loss of consciousness as serious emergency warning signs.

6. Call 911 immediately for suspected heat stroke.

7. Begin cooling a person with suspected heat stroke while awaiting EMS.

8. Never leave children, vulnerable adults, or pets unattended in parked vehicles.

9. Monitor athletes, outdoor workers, and event participants during hot conditions.

10. Include heat emergencies in summer emergency planning.

Preparedness Continues Through the End of Summer

The approaching fall season does not mean heat-related emergencies have disappeared. Late-summer activities can still expose families, workers, athletes, and community members to dangerous conditions.

Basic first aid knowledge and the ability to recognize a rapidly deteriorating patient can make a meaningful difference while professional responders are on the way.

BVAC Rescue Response Training Center provides CPR, AED, first aid, and emergency-response education designed to strengthen individual and community readiness.

Heat safety begins with prevention—but when prevention fails, recognizing the emergency and acting quickly matters.