Heat Stroke 101: An ER Doc Shares What to Watch For
Published Jul 30, 2025
Around half of the U.S. is under heat advisories, impacting over 160 million people. Outdoor workers, infants, seniors, and those with health conditions face higher risks of heat stroke. Symptoms include confusion, dry skin, high fever, and vomiting. Immediate cooling and medical attention are critical. Stay hydrated, wear loose clothing, and recognize early signs like heat exhaustion to stay safe.
Heat advisories affect 160 million Americans
With a significant portion of the United States under heat advisories, affecting over 160 million individuals, understanding the risks and symptoms of heat stroke is crucial. According to emergency room physicians, certain populations are more vulnerable, including outdoor workers, infants, the elderly, and individuals with pre-existing health conditions. Heat stroke occurs when the body's temperature rises to dangerous levels, often exceeding 104°F (40°C), and the body's cooling mechanisms fail.
Confusion, disorientation, rapid pulse are key symptoms
Key symptoms to watch for include confusion, disorientation, dry skin, a rapid and strong pulse, a throbbing headache, and vomiting. In severe cases, heat stroke can lead to seizures, organ damage, and even death. Immediate action is essential to prevent serious complications.
Move to cooler place, cool the body
The first step is to move the affected person to a cooler environment, ideally an air-conditioned space. If air conditioning is not available, find a shady spot or a place with good ventilation.
Apply cool water, use fan, hydrate
Cooling the body down quickly is paramount. This can be achieved by applying cool water to the skin, using a fan to promote evaporation, and placing ice packs or cool, wet cloths on the neck, armpits, and groin. Monitor the person's temperature and continue cooling efforts until it drops to a safer level. Hydration is also critical. If the person is conscious and able to swallow, offer them cool water or a sports drink to replenish electrolytes lost through sweating.
Call emergency services for advanced treatments
However, it's important to seek immediate medical attention. Call emergency services or transport the person to the nearest hospital as quickly as possible. Medical professionals can provide advanced treatments, such as intravenous fluids and cooling techniques, to stabilize the patient and prevent long-term damage.
Hydrate, wear light clothing, avoid peak heat
Prevention is key to avoiding heat stroke. Stay hydrated by drinking plenty of fluids throughout the day, even if you don't feel thirsty. Avoid sugary drinks and alcohol, as they can contribute to dehydration. Wear loose-fitting, lightweight clothing to allow your body to breathe. Schedule outdoor activities for cooler parts of the day, such as early morning or late evening. Take frequent breaks in the shade or air conditioning when working or exercising outdoors.
Heavy sweating, weakness, dizziness are early signs
Be aware of the early signs of heat exhaustion, which can precede heat stroke. These include heavy sweating, weakness, dizziness, headache, nausea, and muscle cramps. If you experience these symptoms, stop your activity, move to a cooler place, and drink fluids. If your symptoms don't improve, seek medical attention.
Understand risks, symptoms, take preventive measures
By understanding the risks, recognizing the symptoms, and taking preventive measures, you can protect yourself and others from the dangers of heat stroke during periods of extreme heat.