Lesson 54: Heat Exhaustion

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📘 Lesson Summary


Heat exhaustion occurs when the body overheats due to dehydration and loss of salts through sweating. It is usually not serious if treated quickly, but can develop into heat stroke if left untreated.

🧠 What is Heat Exhaustion?


Heat exhaustion happens when the body cannot cool itself effectively due to prolonged exposure to heat. Loss of fluids and salts affects normal body function and can lead to collapse if not managed.

🔍 Recognition

  • Heavy sweating
  • Thirst
  • Pale, cold, clammy skin
  • High temperature (38°C or above)
  • Tiredness or weakness
  • Dizziness or fainting
  • Headache
  • Nausea or vomiting
  • Loss of appetite
  • Muscle cramps (arms, legs or stomach)
  • Rapid pulse
  • Reduced urination or dark urine

🩺 Treatment

  • Move to a cool, shaded area
  • Lie them down and raise legs slightly if needed
  • Remove excess clothing
  • Encourage fluids (water or isotonic drinks)

👉 Babies under 6 months should continue normal feeding and do not require water

  • Cool the skin using a damp cloth, sponge or cool water
  • Focus on areas such as the neck and armpits
  • Fan the skin to increase cooling
  • Monitor and record vital signs

🚨 Call 999/112 if:

  • Symptoms do not improve within 30 minutes
  • Condition worsens

⚠️ Important

Heat exhaustion can quickly progress to heat stroke if not treated.

Activity

💡 Key Takeaway

Cool the body quickly, rehydrate, and monitor closely.

👉 If there is no improvement, seek emergency help.