Altitude Sickness

A change in the body due to high altitude. A decrease in atmospheric pressure makes breathing difficult due to less oxygen. Mainly, it happens above 3300 m (10,000 ft). This is a dangerous hazard that threatens the lives of trekkers if symptoms are ignored.

Symptoms and signs

  • Headache or Dizziness
  • Nausea/vomiting
  • Tiredness or fatigue
  • Sleepy but can’t sleep
  • Drunken Gait, Delirious
  • Loss of Appetite
  • Confusion
  • Disorientation
  • Reduced urine output
  • Prevention

Avoiding high altitude sickness is always preferred. A traveler needs to follow these steps.

  • Acclimatization
  • Do not make a rapid ascent.
  • Avoid alcohol, sleeping pills, and smoking.
  • Drink plenty of water.
  • Do not carry more than 10 kg.
  • Climb higher, sleep lower.
  • If over 3000 m, ascend only 330 m a day.
  • Never travel alone.


  • Decent immediately.
  • Provide oxygen cylinders
  • Gamow bags
  • Before dinner, Diamox (125 g)
  • Four Golden Rules

These are the rules for preventing altitude sickness:

  • Be aware of the symptoms of altitude sickness.
  • If you have mild symptoms, do not proceed further.
  • If there are worsening symptoms, descend immediately.
  • Do not leave your teammate behind if attempting a climb.