PreventionBy Mayo Clinic Staff
Heatstroke is predictable and preventable. Take these steps to prevent heatstroke during hot weather:
July 12, 2014
- Wear loosefitting, lightweight clothing. Wearing excess clothing or clothing that fits tightly won't allow your body to cool properly.
- Protect against sunburn. Sunburn affects your body's ability to cool itself, so protect yourself outdoors with a wide-brimmed hat and sunglasses and use a broad-spectrum sunscreen with an SPF of at least 15. Apply sunscreen generously, and reapply every two hours — or more often if you're swimming or sweating.
- Drink plenty of fluids. Staying hydrated will help your body sweat and maintain a normal body temperature.
- Take extra precautions with certain medications. Be on the lookout for heat-related problems if you take medications that can affect your body's ability to stay hydrated and dissipate heat.
Never leave anyone in a parked car. This is a common cause of heat-related deaths in children. When parked in the sun, the temperature in your car can rise 20 degrees F (more than 6.7 C) in 10 minutes.
It's not safe to leave a person in a parked car in warm or hot weather, even if the windows are cracked or the car is in shade. When your car is parked, keep it locked to prevent a child from getting inside.
- Take it easy during the hottest parts of the day. If you can't avoid strenuous activity in hot weather, drink fluids and rest frequently in a cool spot. Try to schedule exercise or physical labor for cooler parts of the day, such as early morning or evening.
- Get acclimated. Limit time spent working or exercising in heat until you're conditioned to it. People who are not used to hot weather are especially susceptible to heat-related illness. It can take several weeks for your body to adjust to hot weather.
- Be cautious if you're at increased risk. If you take medications or have a condition that increases your risk of heat-related problems, avoid the heat and act quickly if you notice symptoms of overheating. If you participate in a strenuous sporting event or activity in hot weather, make sure there are medical services available in case of a heat emergency.
- Extreme heat: A prevention guide to promote your personal health and safety. Centers for Disease Control and Prevention. http://www.bt.cdc.gov/disasters/extremeheat/heat_guide.asp. Accessed May 22, 2014.
- Heatstroke. The Merck Manual for Healthcare Professionals. http://www.merckmanuals.com/professional/injuries_poisoning/heat_illness/heatstroke.html?qt=heatstroke&alt=sh. Accessed May 22, 2014.
- Hyperthermia: Too hot for your health. National Institute on Aging. http://www.nia.nih.gov/newsroom/2012/06/hyperthermia-too-hot-your-health. Accessed May 22, 2014.
- O'Connor FG, et al. Exertional heat illness in adolescents and adults: Epidemiology, thermoregulation, risk factors and diagnosis. http://www.uptodate.com/home. Accessed May 22, 2014.
- O'Connor FG, et al. Exertional heat illness in adolescents and adults: Management and prevention. http://www.uptodate.com/home. Accessed May 22, 2014.
- Mecham CC. Severe nonexertional hyperthermia (classic heat stroke) in adults. http://www.uptodate.com/home. Accessed May 22, 2014.