Buzz
As an unprecedented heat wave engulfs the eastern United States this week, it’s crucial not only to maintain comfort by staying cool but also to prevent heat exhaustion and its more severe counterpart, heat stroke. Recognizing the symptoms of both conditions is essential for safeguarding yourself and your loved ones.
Heat stroke is a severe medical emergency that can lead to seizures, organ failure, and other complications. It is often preceded by heat exhaustion, a milder form of heat-related illness. Both conditions arise when the body fails to regulate its temperature. Typically, the body cools itself by redirecting warm blood from the core to the skin’s surface, releasing heat into the surroundings. Sweating further aids in cooling through evaporation. However, these mechanisms falter in excessively hot or humid environments, leading to potential health risks.
Who is most vulnerable to heat exhaustion and heat stroke?
In healthy individuals, heat stroke is frequently linked to physical activity, as exercise increases core body temperature. This risk is higher for those who are less physically fit or accustomed to exercising in cooler climates. As you acclimate to working out in hot conditions, your body becomes more efficient at cooling itself.
Factors that elevate the risk of heat exhaustion and heat stroke include:
Engaging in physical activity in hot and humid environments
Low levels of physical fitness
Having a larger body size (regardless of body composition—excess fat or muscle mass can both hinder the body's ability to cool down)
Inadequate hydration
Wearing or carrying heavy equipment, such as football gear or a hiking backpack
Consuming alcohol
Using specific medications or supplements, including beta blockers and diuretics
Any condition or disability that limits your ability to escape the heat or cool down effectively
Indicators and symptoms of heat exhaustion
Heat exhaustion arises when your core body temperature rises but does not yet affect brain function. If you or someone else exhibits signs of confusion, treat it as heat stroke and seek immediate medical assistance.
According to the CDC, signs and symptoms of heat exhaustion may include:
Dizziness
Nausea and vomiting
Headache
Fatigue or weakness
Excessive sweating
Cold, pale, and clammy skin
Rapid, weak pulse
If you experience these symptoms, take immediate steps to cool down: seek shade or air conditioning, loosen tight clothing, drink cold fluids, and monitor for worsening symptoms. If there’s no improvement within an hour, seek medical attention.
Signs and symptoms of heat stroke
Heat stroke occurs when the body’s temperature exceeds 104°F (measured rectally) and can impair brain function. The affected person may be too disoriented to recognize the danger, so it’s crucial to watch for symptoms in others.
Heat stroke is a life-threatening condition, so immediate medical attention is crucial if you suspect it. If you’re at an event with medical personnel, such as a marathon or football game, notify them immediately. Otherwise, call 911 or your local emergency number. Symptoms of heat stroke may include headache, dizziness, and nausea, along with:
Confusion, irritability, or hallucinations
Loss of consciousness or collapsing
Difficulty walking
Seizures
Flushed skin, with or without sweating
While waiting for medical help, you can assist in cooling the person down. Medical professionals may prioritize cooling the individual before transporting them to a hospital, depending on their condition. The most effective method is to immerse the person in an ice-cold water bath and continuously stir the water.
If immersion isn’t feasible, alternatives include a cold shower or using a hose. Alternatively, apply icy wet towels to the person’s body, replacing them every three minutes or when they no longer feel cold.
