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CDC Extreme Heat | Frequently Asked Questions Heat exhaustion is a milder form of heat-related illness that can develop after several days of exposure to high temperatures and inadequate or unbalanced replacement of fluids. Heat cramps are muscle pains or spasms – usually in the abdomen, arms, or legs – that may occur in association with strenuous activity. Heat rash is a skin irritation caused by excessive sweating during hot, humid weather. www.bt.cdc.gov /disasters/extremeheat/faq.asp   (1318 words)

Gale Encyclopedia of Medicine: Heat disorders   (Site not responding. Last check: 2007-10-22) Heat disorders are a group of physically related illnesses caused by prolonged exposure to hot temperatures, restricted fluid intake, or failure of temperature regulation mechanisms of the body. Heat cramps in a 16-year-old may be heat exhaustion in a 45-year-old and heat stroke in a 65-year-old. Heat stroke, like heat exhaustion, is also a result of prolonged exposure to hot temperatures, restricted fluid intake, or failure of temperature regulation mechanisms of the body. www.findarticles.com /p/articles/mi_g2601/is_0006/ai_2601000637   (1114 words)

THE MERCK MANUAL, Sec. 20, Ch. 279, Heat Disorders Mild heat exhaustion, precipitated by prolonged standing in a hot environment (because blood pools in heat-dilated vessels in the legs), is manifested by a subnormal body temperature and simple syncope. Heat exhaustion causing circulatory collapse is more difficult to differentiate from insulin shock, poisoning, hemorrhage, or traumatic shock than is heatstroke. Heat exhaustion is usually transient, and the prognosis is good unless circulatory failure is prolonged. www.merck.com /mrkshared/mmanual/section20/chapter279/279c.jsp   (218 words)

Working in Hot Environments Heat exhaustion is caused by the loss of large amounts of fluid by sweating, sometimes with excessive loss of salt. Heat rash, also known as prickly heat, is likely to occur in hot, humid environments where sweat is not easily removed from the surface of the skin by evaporation and the skin remains wet most of the time. Heat disorders in general are more likely to occur among workers who have not been given time to adjust to working in the heat or among workers who have been away from hot environments and who have gotten accustomed to lower temperatures. www.cdc.gov /niosh/hotenvt.html   (3047 words)

Heat Safety Heat stroke is often fatal, and those who survive may have permanent damage to their vital organs. Heat cramps, heat exhaustion, and heatstroke are on the more serous side, while heat syncope, heat edema, and prickly heat are less serious. Heat cramps are painful muscular spasms that occur suddenly usually involving muscles in the back of the leg or the abdomen. www.ipm.iastate.edu /ipm/hortnews/1997/6-20-1997/heat.html   (1370 words)

AANOS Heat exhaustion usually can be remedied by rest in an air or conditioned room or shaded area. Symptoms of heat exhaustion usually are depicted by a normal body temperature, cold, clammy and pale skin, extreme fatigue, occasional fainting spells, dizziness and headaches. Treatment of heat exhaustion begins by instructing the instructing the afflicted party to lie down and raise their feet and legs 8 to 12 inches (20-30 cm.) higher than head level. www.aanos.org /edctn_heatstrokexhaustion.html   (416 words)

Heat Stress In heat exhaustion, the surface blood vessels and capillaries which originally enlarged to cool the blood collapse from loss of body fluids and necessary minerals. The symptoms of heat exhaustion include: headache, heavy sweating, intense thirst, dizziness, fatigue, loss of coordination, nausea, impaired judgment, loss of appetite, hyperventilation, tingling in hands or feet, anxiety, cool moist skin, weak and rapid pulse (120-200), and low to normal blood pressure. A heat stroke victim may first suffer heat cramps and/or the heat exhaustion before progressing into the heat stroke stage, but this is not always the case. www.pp.okstate.edu /ehs/training/heat.htm   (602 words)

Heat Stroke/exhaustion in Bulldogs Every dog is a potential victim of heat exhaustion, but the shorter breathing system of the Bulldog is what puts them at such very strong risk for heat stroke. The leading cause of heat exhaustion, and its advancing into heat stroke; is leaving a dog in a hot car, but there are other things that cause it like the loss of electric in your home on a hot day while yoru at work,ect. There are many variables in triggering a dog to experience heat exhaustion; the dog's physical condition, its age, its coat length, its breed, and its climatization to heat. www.homestead.com /bulldogsworld/heatstroke.html   (1024 words)

Heat Cramps, Heat Exhaustion, and Heat Stroke Heat cramps are muscle contractions, usually in the gastrocnemius or hamstring muscles (the muscles at the back of the calves). Although partly due to exhaustion -- and feeling like exhaustion, as the name implies -- heat exhaustion is also a result of excessive heat and dehydration. The signs of heat exhaustion include paleness, dizziness, nausea, vomiting, fainting, and a moderately increased temperature (101-102 degrees F) which, in this case, is not truly a fever, but caused by the heat. www.drreddy.com /heat.html   (934 words)

Medical Library Search Heat disorders are a group of physical disorders brought on by prolonged exposure to hot temperatures, insufficient fluid intake, and failure of the body to successfully regulate its internal temperature. People who have symptoms of heat exhaustion must be moved from the sun into the shade (or from the hot environment to a cooler area) and carefully laid down with their legs slightly elevated. The primary symptom of heat stroke is a spike in temperature to greater than 104°F. When a person experiences heat stroke, he or she loses the normal mechanisms for coping with heat stress, such as temperature control and sweating. www.medem.com /search/article_display.cfm?path=n:&mstr=/ZZZEJR333AC.html&soc=AMA&srch_typ=NAV_SERCH   (534 words)

Heat Illness The result may be heat illness, which can come in the form of heat cramps, heat exhaustion, or heatstroke. Heat cramps are brief, severe cramps in the muscles of the legs, arms, or abdomen that may occur during or after vigorous exercise in extreme heat. Heat exhaustion is a more severe heat illness that can occur when a person in a hot climate or environment hasn't been drinking enough fluids. www.kidshealth.org /parent/firstaid_safe/emergencies/heat.html   (559 words)

NASD: Heat Stress Heat stress is a buildup of body heat generated either internally by muscle use or externally by the environment. Heat exhaustion and heat stroke result when the body is overwhelmed by heat. Heat stress may result from the buildup of muscle generated heat in the body. www.cdc.gov /nasd/docs/d001701-d001800/d001702/d001702.html   (841 words)

eMedicine - Heatstroke : Article by Robert S Helman, MD Physiologic responses to heat include an increase in the blood flow to the skin (as much as 8 L/min), which is the major heat-dissipating organ; dilatation of the peripheral venous system; and stimulation of the eccrine sweat glands to produce more sweat. The efficacy of evaporation as a mechanism of heat loss depends on the condition of the skin and sweat glands, the function of the lung, ambient temperature, humidity, air movement, and whether or not the person is acclimated to the high temperatures. Evaporative body heat loss may be accomplished by removing all of the patient's clothes and intermittently spraying the patient's body with warm water while a powerful fan blows across the body, allowing the heat to evaporate. www.emedicine.com /med/topic956.htm   (7393 words)

NWS Publications: Heat Wave Heat disorders generally have to do with a reduction or collapse of the body’s ability to shed heat by circulatory changes and sweating, or a chemical (salt) imbalance caused by too much sweating. When heat gain exceeds the level the body can remove, or when the body cannot compensate for fluids and salt lost through perspiration, the temperature of the body’s inner core begins to rise and heat-related illness may develop. Studies indicate that, other things being equal, the severity of heat disorders tend to increase with age-heat cramps in a 17-year-old may be heat exhaustion in someone 40, and heat stroke in a person over 60. www.weather.gov /om/brochures/heat_wave.shtml   (1522 words)

NIA - Hyperthermia Heat stress occurs when a strain is placed on the body as a result of hot weather. Heat cramps often are caused by a lack of salt in the body, but salt replacement should not be considered without advice from a physician. Although heat exhaustion often is caused by the body’s loss of water and salt, salt supplements should only be taken with advice from a doctor. www.wramc.amedd.army.mil /education/hyperthe.htm   (962 words)

OA Guide to Heat Related Injuries & Fluid Balance Heat illnesses are the result of elevated body temperatures due to an inability to dissipate the body's heat and/or a decreased fluid level. Heat Syncope (fainting) is a mild form of heat illness which results from physical exertion in a hot environment. In an effort to increase heat loss, the skin blood vessels dilate to such an extent that blood flow to the brain is reduced, resulting in symptoms of faintness, dizziness, headache, increased pulse rate, restlessness, nausea, vomiting, and possibly even a brief loss of consciousness. www.princeton.edu /~oa/safety/heatill.html   (2366 words)

eMedicine - Heat Exhaustion and Heatstroke : Article by Amy Kunihiro, MD   (Site not responding. Last check: 2007-10-22) The major heat-related illnesses, heat exhaustion and heatstroke, exist along a continuum of severity caused by dehydration, electrolyte losses, and failure of the body's thermoregulatory mechanisms. Heat exhaustion is an acute heat injury with hyperthermia caused by dehydration. Convection is the transfer of heat from the body to the air and water vapor surrounding the body; it accounts for 10% of the body's heat loss. www.emedicine.com /emerg/topic236.htm   (3560 words)

AllRefer.com - heat exhaustion (Pathology) - Encyclopedia heat exhaustion, condition caused by overexposure to sunlight or another heat source and resulting in dehydration and salt depletion, also known as heat prostration. The symptoms are severe headaches, weakness, dizziness, blurred vision, and sometimes unconsciousness. Water, mineral, and ion depletion may be so severe that painful spasms of the muscles, commonly called heat cramps, occur. reference.allrefer.com /encyclopedia/H/heatexha.html   (195 words)

Understanding Heat-Related Illness -- the Basics Heat exhaustion, heat cramps and heat stroke all occur when your body cannot cool itself adequately. Heat exhaustion occurs when the body loses large amounts of water and salt through excessive sweating, particularly through hard physical labor or exercise. The most serious of the heat-related illnesses, heat stroke occurs when the body suffers from long, intense exposure to heat and loses its ability to cool itself. www.webmd.com /content/article/54/61499   (400 words)

American Red Cross Heat index: A number in degrees Fahrenheit (F) that tells how hot it really feels when relative humidity is added to the actual air temperature. Although heat cramps are the least severe, they are an early signal that the body is having trouble with the heat. Heat exhaustion: Heat exhaustion typically occurs when people exercise heavily or work in a hot, humid place where body fluids are lost through heavy sweating. www.redcross.org /services/disaster/0,1082,0_586_,00.html   (768 words)

Preventing Heat Stress in Children and Adolescents Heat stress, or heat exhaustion, is characterized by dizziness, weakness, nausea, headache, and cramps. And the hotter the air temperature and higher the humidity, the more susceptible children and adolescents are to heat stress. High humidity can be a factor even without extremely high air temperatures; 70% of heat stress is due to humidity, 20% due to solar radiation, and only 10% to air temperature. healthlink.mcw.edu /article/963335058.html   (486 words)

The Children's Hospital at Westmead - Parents - Children - heat and safety   (Site not responding. Last check: 2007-10-22) In hot weather it can be very easy for children to suffer from heat exhaustion, or worse still, heat stroke. Young children are very sensitive to heat and are at greater risk of heat stroke. Signs of heat stroke include a high body temperature, red-hot dry skin, loss of consciousness, a full bounding pulse and rapid shallow noisy breathing. www.chw.edu.au /parents/factsheets/dehydrat.htm   (638 words)

Heat Exhaustion Heat exhaustion is a serious illness caused by too much heat. During prolonged heat waves, the very young and the very old are also often at risk, even if they are not active. The two basic steps in treating heat exhaustion are to replenish the body's lost fluids and to cool the body's temperature. orthoinfo.aaos.org /fact/thr_report.cfm?Thread_ID=182&topcategory=Wellness   (505 words)

MedlinePlus Medical Encyclopedia: Heat emergencies Heat emergencies fall into three categories of increasing severity: heat cramps, heat exhaustion, and heatstroke. Heat illnesses are easily preventable by taking precautions in hot weather. If the problem isn't addressed, heat cramps (caused by loss of salt from heavy sweating) can lead to heat exhaustion (caused by dehydration), which can progress to heatstroke. www.nlm.nih.gov /medlineplus/ency/article/000056.htm   (632 words)

Heat rash (0-12 months) Heat rash, also known as "prickly heat," is an eruption of little bumps on the skin that can show up when your baby overheats. Hot, humid weather is prime time for heat rash, but you might see it in winter, too, if your baby has too many layers of clothing on or runs a fever. Heat rash often occurs when the sweat glands are very active — because a baby is overheated or has a fever, for example — or when they're blocked by something like ointment or tight, heavy, and/or nonporous clothing. www.babycenter.com /refcap/baby/babyills/10881.html   (791 words)

Heat Exhaustion Heat stroke is a much more serious condition, placing the individual at imminent risk of cardiovascular collapse and death if not promptly reversed. Heat exhaustion results most frequently from exposure to high temperature, accompanied by dehydration, usually from not drinking enough fluids. As with herbs, the use of homeopathic remedies has yet to be scientifically investigated in the treatment of heat exhaustion. brainybrawn.com /IMCAccess/ConsConditions/HeatExhaustioncc.html   (1139 words)

HEAT STROKE -Veterinary News Article for the Loyalsock Animal Hospital, Williamsport, Pennsylvania Heat stroke occurs when the dog's ability to regulate its body temperature is lost. Dogs experiencing heat stroke will have a muddy pink color of their gums instead of the nice red-pink color that normally exists. Heat stroke requires veterinary assistance, but you can effectively initiate treatment in most cases before heading for the vet. www.loyalsockanimal.com /heatstroke.htm   (1071 words)

MediScene | Medical Publications | Heat Exhaustion, Heat Stroke, and Related Disorders   (Site not responding. Last check: 2007-10-22) Heat exhaustion and heat stroke are separable entities. There are two types: Primary water loss heat exhaustion, and Salt depletion heat exhaustion. Heat cramps = acute muscle cramps in exerted muscle occurring postexertionally in someone who replaces water not salt. www.mediscene.com /medpub/heat.htm   (151 words)

Heat Stroke & Exhaustion Heat stroke and heat exhaustion occur when the body's heat regulating function is not working properly and the body loses too much fluid. It's difficult for untrained persons to tell the difference between heat exhaustion and heat stroke. Consequences of heat stroke may include brain damage, kidney failure and death. webits3.appstate.edu /apples/health/Heat/heat_stroke.htm   (187 words)

Heat exhaustion Heat exhaustion occurs when a person cannot sweat enough to cool the body. Heat exhaustion can be caused by loss of fluid (dehydration) or loss of electrolytes. Symptoms of heat exhaustion include fatigue, weakness, headache, dizziness, or nausea, and the skin is pale, cool, and moist. www.webmd.com /hw/health_guide_atoz/sig246602.asp?navbar=hw247545   (148 words)

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