HOT WEATHER
Extremely hot days have the potential to cause adverse health effects.
Who is at risk in hot weather?
All people may feel the effects of extremely hot weather but certain groups are more vulnerable:
Protecting yourself and your family in hot weather
When planning trips, take account of possible longer travelling times. Keep your home and office first-aid kit and disaster management packs up to date.
Remember that pets and animals are also prone to heat effects – keep them in the shade and provide plenty of water.
Staying cool indoors when it’s hot outside
Older people who live alone may need to be checked on daily to ensure they are well.
How do I help myself or someone who may be suffering from heat-related illness
If you feel weak, anxious, dizzy, have intense thirst and a headache, do the following as soon as possible:
A heat stroke can occur suddenly and may progress rapidly to unconsciousness. If you suspect someone may be suffering the effects of a heat stroke, refer him/her to the hospital.
While waiting for the ambulance to arrive:
Symptoms and basic management of heat-related conditions
Heat-related condition | Signs and symptoms | Initial management | |
| Mild and Moderate |
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Dehydration | A feeling of thirst, fatigue and light | Drink water or oral solutions | |
| headedness. Can be associated | containing electrolytes. | |
| with headaches. Constipation may | Rest in a cool area. | |
| occur with dehydration (especially | If symptoms do not improve seek | |
| in the elderly). | medical attention. |
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| If constipated discuss treatment | |
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| options with a medical professional. | |
Heat rash | Small red itchy rash on the face, | Rash usually improves without | |
| neck, upper chest, under breast, | treatment. |
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| groin and scrotum areas. Infection | Minimise sweating by staying in an | |
| may occur. | air-conditioned environment, taking | |
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| frequent showers and wearing light | |
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| clothes. |
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| Keep the affected area dry. | |
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| Topical antihistamine and antiseptic | |
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| creams may reduce discomfort and | |
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| prevent secondary infection. | |
Heat oedema | Swelling of the lower limbs, | Treatment is not | required. |
| usually ankles. | Usually subsides | following |
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| acclimatisation to the heat. | |
Heat syncope | Brief loss of consciousness or | The person affected should rest in a | |
| dizziness on standing. | cool place and lie down with legs and | |
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| hips elevated. |
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| Seek medical attention to rule out |
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| other causes of faints. |
Heat cramps | Painful muscular spasms, often in | Immediate rest in a cool place. |
| the legs, arms or abdomen. | Stretch muscles and massage |
| Usually occurs at the end of | gently. |
| sustained exercise. | Oral rehydration may be needed |
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| using a solution containing |
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| electrolytes. |
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| Medical attention should be sought if |
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| heat cramps are sustained for more |
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| than one hour. |
Heat exhaustion | Symptoms of intense thirst, | Move to a cool shaded room or air- |
| weakness, discomfort, anxiety, | conditioned place. |
| dizziness, fainting and headaches. | Apply cold wet sheet or cold water |
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| spray and use a fan if available. |
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| Severe and Life-Threatening | |
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Heat stroke | Symptoms of confusion, | Shift patient to the hospital |
| disorientation, convulsions and |
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| unconsciousness. |
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Worsening of pre- | This is especially of concern in | Seek medical attention if you have a |
existing illness | people with heart disease, | chronic condition and develop new |
| strokes, and respiratory disease. | symptoms. |
| Symptoms can vary from mild to | If any severe symptoms, refer to the hospital |
| severe, depending on the disease. |
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| This can include but is not limited |
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| to chest pains, shortness of |
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| breath, dizziness or confusion. |
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References
Table adapted from WHO Heat Health Action Plans Guidance, 2008