Exertional heat stroke (EHS) generally occurs in young individuals who engage in strenuous physical activity for a prolonged period in a hot environment. Classic nonexertional heat stroke (NEHS) more commonly affects sedentary elderly individuals, persons who are chronically ill, and very young persons.
In a type of heatstroke, called nonexertional (classic) heatstroke, being in a hot environment leads to a rise in core body temperature. This type of heatstroke typically occurs after exposure to hot, humid weather, especially for prolonged periods.
Heat emergencies have three stages: heat cramps, heat exhaustion, and heatstroke. All three stages of heat emergency are serious. If you live in hot climates or play sports in the summertime, you should know how to spot the symptoms of heat emergency.
Heat Stroke. Heat stroke is the most serious heat-related illness. It occurs when the body becomes unable to control its temperature: the body’s temperature rises rapidly, the sweating mechanism fails, and the body is unable to cool down.
“Generally, caution should be taken if the heat index is over 77 degrees (Fahrenheit). Above 82 degrees is considered ‘extreme caution’ — heat-related illness is possible with long exposure. Over 85 is dangerous — heat illness is likely and heat stroke is possible.
Those at greatest risk for heat-related illness include infants and children up to four years of age, people 65 years of age and older, people who are overweight, and people who are ill or on certain medications.
There are two types of heatstroke: exertional and non-exertional. Non-exertional heatstroke occurs in those who cannot adapt well to increasingly hot temperatures. Older adults, people with chronic illnesses, and infants are often affected.
Heat stroke This happens when the body heats up faster than it can cool off, like a hot radiator in an overheated car. Older adults are especially vulnerable to developing heat stroke when temperatures are high because of the aging body’s decreased capacity to adapt to changes in body temperature.
Heat-related illness includes the following conditions based on the severity of a child’s condition:
Both heat exhaustion and heat stroke are serious conditions. Heat exhaustion begins with general muscle weakness, sudden excessive sweating, nausea and vomiting, and possible fainting. A heat stroke is when your body’s internal temperature reaches over 103 degrees.
Of all the heat-related illnesses, heat exhaustion is the most common. It’s also a serious type of heat-related illness that should be addressed as quickly as possible. Heat exhaustion is caused by the body’s extreme depletion of water and salt.
If your body is overheating, and you have a high temperature, bumps on your skin, muscle spasms, headache, dizziness, nausea or a number of other symptoms, you may have one of the most common heat-related illnesses: heat rash, heat cramps, heat exhaustion or heat stroke.
When a worker’s body temperature rises to extreme levels, heat stroke can cause damage to the brain, heart, liver, and kidneys through hyperthermia or the disintegration of damaged muscle tissue. An increased body temperature can also cause some organs to swell and remain permanently injured.
After you’ve had heat exhaustion or heatstroke, you will be sensitive to heat. This can last for about a week. It’s important to rest and let your body recover. Avoid hot weather and exercise.
A. These two terms refer to the same condition. Heatstroke (or sunstroke) happens when the body can no longer maintain a temperature of under 105° F when exposed to hot weather. People almost always have warning symptoms before heatstroke, yet sometimes they do not pay attention, or are not able to take action.