During the summer, heat waves can cause serious health problems and emergencies, especially in urban areas where the heat is made worse by air pollution and high humidity levels. They usually involve the abdominal muscles or legs. Lightly stretch the affected muscles. Give a half-glass of cool water every 15 minutes. Do not give liquids with alcohol or caffeine in them, as they can make conditions worse.
Fluid loss causes blood flow to decrease in the vital organs, resulting in a form of shock.
With heat exhaustion, sweat does not evaporate as it should, possibly because of high humidity or too many layers of clothing. As a result, the body is not cooled properly. Signals include cool, moist, pale or flushed skin, heavy sweating, headache, nausea, vomiting, dizziness and exhaustion. Body temperature will be near normal. Give a half-glass of cool water every 15 minutes.