I have not experienced this....but if you are in the Philippines and this is a common phenomenon then I you have your answer. I would check with other school nurse in your area or call a local pediatrician.
You need to be very careful that these children are not suffering from heat stroke or heat exhaustion which is an emergency. The "western children" would be particularly susceptible to this. Heat stroke, or hyperthermia, can occur quickly. Children are particularly susceptible to heat stroke because their bodies heat up five times faster than an adult’s.
Heat exhaustion is an illness that occurs when someone is too active in hot temperatures. Heat stroke is a more severe illness that occurs under the same circumstances, but can be life-threatening.
Both heat exhaustion and heat stroke happen under the following conditions:
- Very hot environment
- Heavy activity
- Too little fluid and salt intake
A risk factor is something that increases your chance of getting a disease or condition.
- Participating in a job or activity that involves long periods of outdoor activity in hot weather
- Age: elderly or the very young
Symptoms of heat exhaustion may include:
- Temperature over 37.8°C (about 100°F)
- Low blood pressure
- Fast pulse
- Moist skin, sweating
- Muscle cramps and tenderness
- Nausea, vomiting
- Dizziness or lightheadedness
- Heavy sweating
- Pale, clammy skin
- Rapid heartbeat
- Dizziness, fainting
- Nausea, vomiting
- Muscle and abdominal cramps
- Mild temperature elevations
Symptoms of heat stroke may include:
- Temperature over 40.5° C (about 105° F)
- Weakness, dizziness
- Blurred vision
- Confusion, delirium, unconsciousness (can progress to coma)
- No sweating
- Pale, dry skin
- Fast breathing, fast irregular pulse, high blood pressure
Treatment for heat exhaustion includes:
- Moving the person to a cool, shady area or AIR CONDITIONED ROOM
- Giving adequate fluids—it is best to give fluids that contain both salt and sugar. If the person isn't able to drink, it may be necessary to give fluids through an intravenous line.
- Encouraging the person to rest
Treatment for heat stroke includes:
- Removing clothing
- Moving the person to a cool, shady area.or AIR CONDITIONED ROOM
- Actively cooling the person—the most effective way is called "evaporative cooling." In evaporative cooling, the person is sponged with cool water or sprayed with cool mist, and fans are used to blow air onto the person.
- Giving intravenous fluids
- Giving medications—these may be necessary if the person is having seizures or uncontrollable shivering.
- Careful monitoring—People who have undergone heat stroke need regular and careful monitoring of body temperature, heart rate, blood pressure, and breathing rate. Blood tests will be repeated at regular intervals to monitor how the body's organs are responding to the shock of heat stroke.
To help prevent heat exhaustion and heat stroke:
- Avoid prolonged exposure to high temperatures.
- If you have to work or exercise under hot conditions, drink lots of fluids (preferably sports drinks, which contain both salt and sugar), and take frequent breaks in the shade.
- If you have a risk factor for heat exhaustion or heat stroke, be very careful of doing activity in hot weather. Take regular rests and drink lots of fluids.
- During heat waves, try to spend time indoors with air-conditioning or go to an air-conditioned shelter. This is especially important for elderly adults.
Heat exhaustion occurs when your body gets too hot. The hypothalamus, the part of the brain that controls thirst and hunger, also controls the body's core temperature. Normally, the body cools itself by sweating. But if you are exposed to high temperatures for a long time (working outdoors in the summer, for example) and don't replace the fluids you lose, the body systems that regulate temperature become overwhelmed. As a result, your body produces more heat than it can release. Heat exhaustion requires immediate attention because it can progress to heat stroke, a life threatening illness.