Heat exhaustion and heatstroke
Heat exhaustion and heatstroke can often be prevented by taking sensible precautions when it's very hot.
During the summer, check for heatwave warnings, so you're aware when there's a potential danger. The government uses a system called Heat-Health Watch to warn people about the chances of a heatwave. This isa system of four different warning levels based on the expected temperature.
Public Health England (PHE) has also published a Heatwave plan for England (PDF, 1.19Mb) , which suggests following the advice below during a heatwave to help prevent heat-related illnesses.
If you're travelling to a hot country, be particularly careful for at least the first few days, until you get used to the temperature.
If youre not urinating frequently or your urine is dark, it's a sign that you're becoming dehydrated andneed to drink more.
In the longer term, it can help to have your loft and cavity walls insulated, as thiswill keep the heat in when it's cold and keep it out when it's hot. Using light-coloured, reflective external paint on your house may also be useful.
Read about how to prepare for a heatwave.
Heat exhaustion and heatstroke are two potentially serious conditions that can occur if you get too hot. They usually happen during a heatwave or in a hot climate, but can also occur when you're doing very strenuous physical exercise.
Heat exhaustion or heatstroke can develop quickly over a few minutes, or gradually over several hours or days. Signs of heat exhaustion can include: tiredness and weakness feeling faint or Lighthe
If you notice that someone has signs of heat exhaustion, you should: get them to lie down in a cool place such as a room with air conditioning or somewhere in the shade removeany unnecessary clo
Severe heat exhaustion or heatstroke requires hospital treatment. You should call 999 for an ambulance if: the person doesn't respond to the above treatment within 30 minutes the person has s
Anyone candevelop heat exhaustion or heatstroke during a heatwave or while doing heavy exercise in hot weather. However,some people are at a higher risk. These include: elderly people babies and y
Heat exhaustion and heatstroke can often be prevented by taking sensible precautions when it's very hot. During the summer, check for heatwave warnings, so you're aware when there's a potential dange