To help relieve heat cramps, rest in a cool place, and be sure to replenish the fluids and electrolytes that are lost when you sweat. Heat edema can occur if you stand or sit for a long time in the heat and are not used to being in warmer temperatures. This can cause your hands, lower legs, or ankles to swell. This swelling is from fluid buildup in your extremities. This is possibly related to a response involving the aldosterone-stimulated reabsorption of sodium into the blood through the kidneys.
Usually heat edema spontaneously subsides over time once you become used to the warm environment. Cooling down and putting your feet up will also help, as will staying hydrated with adequate water and electrolyte intake. Sometimes, being active in the heat for prolonged periods of time can cause red pimple-like bumps to appear on the skin.
This usually develops underneath clothing that has become soaked with sweat. Learn more: Types of heat rash ». This is one of the most serious stages of hyperthermia. Keep reading: Do you have heat stroke or heat exhaustion?
Learn the signs ». It can be fatal. Fainting is often the first sign. People who work in very hot environments or are exposed to high heat during the course of the job are at high risk for hyperthermia. Construction workers, farmers, and others who put in long hours outside in the heat should take precautions against hyperthermia. The same is true for firefighters and people who work around large ovens or in indoor spaces that are poorly air-conditioned.
Certain health conditions can also put you at higher risk for hyperthermia. Certain heart and blood pressure medications, such as diuretics , can reduce your ability to cool down through sweat. Children and older adults are at increased risk as well. Many kids play hard in the hot outdoors without taking time to rest, cool off, and stay hydrated. Older adults who live in a home without fans or air conditioning may also face hyperthermia in extremely hot weather. It normally keeps your temperature at around In this case, fever occurs as part of the immune system reaction.
As the infection disappears, your hypothalamus should reset your temperature back to its normal levels. With hyperthermia from heat stroke, however, the body is responding to changes in your environment. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission.
This content does not have an English version. This content does not have an Arabic version. Overview A fever is a temporary increase in your body temperature, often due to an illness. Request an Appointment at Mayo Clinic.
Share on: Facebook Twitter. Show references Goldman L, et al. Approach to fever or suspected infection in the normal host. In: Goldman-Cecil Medicine. Philadelphia, Pa. Accessed April 5, Merck Manual Professional Version. Fever in infants and children.
Bennett JE, et al. Temperature regulation and the pathogenesis of fever. Elsevier; Accessed March 25, Kliegman RM, et al. In: Nelson Textbook of Pediatrics.
Accessed April 6, Ward MA. Fever in infants and children: Pathophysiology and management. Schmitt BD. American Academy of Pediatrics; Marx JA, et al. Pediatric fever. Several jobs or types of work also increase the risk of hyperthermia.
Common occupations or work associated with an increased risk of hyperthermia include:. If someone is badly sunburned, they may develop sunburn blisters. Learn more about them, their treatment options, and sun protection advice, here. Heat exhaustion occurs if the body is dehydrated and is unable to regulate its internal temperature. Without treatment, it can develop into heatstroke,. We look at the eight best essential oils for sunburn. Vitamins E and C may help, as well as lavender, tea tree, and others.
Included is information on…. Summer can be fun and a great time to get extra fit, but it can also involve a number of hazards, especially when you spend time outdoors. Learn how…. Dark-colored urine and thirst are classic signs that someone is dehydrated.
The simple solution is to drink more. But when dehydration occurs in the…. What should you know about hyperthermia? Medically reviewed by Carissa Stephens, R. What are the symptoms? What are the treatments? What causes hyperthermia? Risk factors Activities that carry the greatest risk for hyperthermia Hyperthermia refers to a group of heat-related conditions characterized by an abnormally high body temperature — in other words, the opposite of hypothermia.
Share on Pinterest Hyperthermia is a group of conditions where the body becomes too hot and cannot regulate its temperature. Share on Pinterest Cooling down with a drink of cold water or using a fan to cool the skin will benefit those with mild to moderate hyperthermia. Risk factors.
Activities that carry the greatest risk for hyperthermia.
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