HDR Tutorial
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Hot Weathers Info

Hot Weathers Info

Periods of extremely hot weather–heat waves–can cause serious health problems for everyone. Illinois experienced this firsthand in July 1995, when extreme heat contributed to the deaths of more than 700 people in the Chicago area.

Body cools itself by sweating. If temperatures and humidity are extremely high, however, sweating is not effective in maintaining the body’s normal temperature.

When this happens, blood chemistry can change and internal organs–including the brain and kidneys–can be damaged. Heat also can be stressful if the temperature changes suddenly. Usually it takes several days for the body to adjust to heat.

The most common heat-related conditions are heatstroke, heat exhaustion, heat cramps, sunburn and heat rash. Heatstroke and heat exhaustion are the most serious conditions.

Heat exhaustion can result when too much time is spent in a very warm environment, resulting in excessive sweating without adequate fluid and electrolyte (salt and minerals) replacement.

This can occur either indoors or outdoors, with or without exercise.

Symptoms of heat exhaustion may include dizziness, headache, nausea, abdominal cramps, shallow breathing, cool and clammy skin, muscle tremors and heavy perspiration.

Source: http://www.idph.state.il.us

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