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But when we are exposed to high temperatures and humidity, especially for long periods (such as during heatwaves) the natural cooling system may be overloaded. Normally, our bodies keep cool by producing sweat that evaporates. Heat illnesses happen when the body’s systems to regulate temperature fail. What causes heat stroke and heat exhaustion? shortness of breath or trouble breathing and.loss of muscle control and coordination (which can affect movement and speech).hot, red and dry skin, usually without any sweat.Symptoms may include some symptoms of heat exhaustion (headache, nausea and vomiting, dizziness, fast pulse and breathing). In heat stroke, the core body temperature is 40 degrees Celsius or higher.

The core body temperature is lower than 40 degrees Celsius in heat exhaustion.Ĭhildren with heat exhaustion may be very sleepy or even become floppy.

You may also have signs such as a fast, weak pulse, and your breathing may be fast and noisy.

muscle cramps (often affecting the calves and toes) and.

pale, cool or clammy skin, which may later become red or flushed.

What are the symptoms of heat exhaustion and heat stroke?Ĭommon symptoms of heat exhaustion include: Some people are more prone to heat illnesses than others, but there are things you can do to prevent heat exhaustion and heat stroke.

Exertional heat stroke, which happens through exercise or exertion in hot and humid weather.

It usually affects older people or those with illnesses that mean they are less able to cope with the heat and/or remove themselves from hot environments. Classic heat stroke, which happens in very hot and humid weather conditions and may develop slowly, over several days.