This may be accompanied by a rash and blisters. It is caused by the sweat glands becoming congested leading to an unpleasant prickly sensation usually affecting the neck, chest and back. Prickly heat is a common condition in hot and humid climates - it particularly affects children. take advantage of air-conditioning and shade where possible.įor further information on the management of sun exposure please refer to the Sun Safety advice sheet.avoid heat exposure during the hottest part of the day, usually between 11am and 3pm.a hand held personal fan may prove invaluable when it is not possible to escape heat.clothing should be light and airy, avoid wearing dark or tight fitted clothing.if urine becomes dark then fluid intake needs to be increased - this is a good indicator of hydration status.maintain adequate hydration fluid intake can be supplemented with small (but not excessive) amounts of salt added to food or drink, providing you have no pre-existing medical contraindications.limit physical exertion until you have become acclimatised, most travellers will adapt to higher temperatures in approximately 10 days.Heat acclimatisation takes time you can take some simple steps to reduce your risk of heat related illness: Those undertaking strenuous physical activity such as athletes, hikers and military personnel are at greater risk of major heat disorders.The elderly, babies and children, and those with pre-existing medical conditions may be more susceptible to heat disorders.Humidity can reduce the rate of sweat evaporation making it difficult to regulate the body's temperature.Rapid dehydration may occur in hot dry conditions.When the body gets overheated, blood is directed away from the centre of the body by relaxation of the blood vessels, this causes sweating and cooling. Temperature regulation is maintained by the skin and circulation. Heat exhaustion and heatstroke are related conditions that can have a serious outcome if not treated promptly. low sodium in the blood (hyponatremia) as a result of over exertion or exercise.Exposure to high temperatures can result in loss of fluids and salts. Hot, sunny and tropical climates may expose travellers to a rapid change in temperature and/or humidity which can have an adverse effect on their health.
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