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Signs of physical and emotional exhaustion: 1  Chronic fatigue. 2  Insomnia. 3  Forgetfulness/impaired concentration and attention. 4  Physical symptoms. 5  Increased illness. 6  Loss of appetite. 7  Anxiety. 8  Depression. 9  Anger.
A person with heat exhaustion loses body fluids and salts from being exposed to high temperatures for long periods of time. Symptoms of heat exhaustion include fatigue as the body becomes dehydrated, blood volume is reduced and blood pressure drops. Heat exhaustion is a separate condition to heatstroke. The risk of heat-related illness dramatically increases when the environmental temperature climbs to 26Â°C or higher.