heat stroke occurs when the balance of water and salt such as sodium is lost due to activities under the scorching sun or intense exercise.

　In particular, it is more likely to occur in environments such as unusually high temperatures and humidity, wind is weak, and when the temperature rises above 35 degrees, the likelihood of becoming heat stroke.
　However, even during the period when the temperature is not high (when it is not hot), it may occur due to the occurrence of a large amount of heat or dehydration in the muscles during sports or activities.
　Be aware of the right knowledge and try to prevent it, and if you suspect heat stroke.

Symptoms of heat stroke ("heat stroke Environmental Health Manual (Ministry of the Environment)

I degree

Dizziness, syncope, swelling, and massive sweating appear as symptoms

II degree

Symptoms such as headaches, nausea, and sluggish body appear as symptoms

III degree

Disorders of consciousness, convulsions, hyperthermal temperature, etc. appear as symptoms

heat stroke's response

If you think it may be heat stroke, it is important to recognize that the emergency is facing death and take the following actions immediately:

• Move to a well-ventilated shade or a cooler room.
• Loosen your clothes
• Cool your body
  Apply a towel wet with ice or cold water to your limbs.
  Or use a fan or fan to send the wind.
• Replenish water and salt with sports drinks etc.

Prevention of heat stroke
　heat stroke can be life-threatening, but knowing how to prevent it with a little care in everyday life.

Avoid the heat
Outdoors, walk in the shade, wear parasols, and wear hats.
He also avoids excessive exercise and work under the scorching sun.
Exercise and work in hot places frequently change people and reduce the activity time of each person as short as possible.

Hydrate frequently
It is important to hydrate before you get thirsty.

Don't overdo it when you are not feeling well.
When you feel unwell, such as fatigue, fever, cold, and diarrhea, rest your body without overdoing it.

Devise a dress
Wear clothes and underwear made of highly absorbent and breathable material that absorbs sweat.

Create a cool environment indoors
Indoors, curtains and blinds are used to prevent direct sunlight and improve ventilation.
Create a cool environment by using a cooler.

[Reference]

※heat stroke, Ministry of the Environment http://www.env.go.jp/chemi/heat_stroke/
※heat stroke Prevention of Japan Sports Association http://www.japan-sports.or.jp/medicine/guidebook1.html

[Date of publication: 2014.7.10]

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