Tibet Altitude Sickness: Symptoms, Prevention & Treatment

Altitude sickness (acute mountain sickness or AMS) occurs when your body doesn't get enough oxygen at high altitudes:

• Lhasa altitude: 3,656 meters (12,000 feet)
• Onset: Symptoms usually appear within 6-12 hours of arrival
• Prevalence: 30-50% of tourists experience some symptoms
• Severity: Usually mild to moderate; severe cases are rare
• Duration: Symptoms typically resolve within 24-48 hours with rest

Mild symptoms (most common):

• Headache (most common symptom)
• Nausea or loss of appetite
• Fatigue or weakness
• Shortness of breath
• Dizziness or lightheadedness
• Difficulty sleeping

Severe symptoms (rare, seek medical help):

• Severe headache unrelieved by medication
• Persistent vomiting
• Confusion or difficulty concentrating
• Extreme fatigue or inability to walk
• Fluid in lungs (wet cough, shortness of breath at rest)

• Gradual acclimatization: Spend 1-2 days in Lhasa before high-altitude activities
• Hydration: Drink 3-4 liters of water daily
• Avoid alcohol: Alcohol worsens altitude sickness
• Avoid heavy exercise: Rest for the first 24-48 hours
• Eat light meals: Avoid heavy, fatty foods
• Medication (Diamox): Take 250mg twice daily starting 24 hours before ascent
• Ginkgo biloba: Some evidence suggests it may help (optional)

Self-care for mild symptoms:

• Rest and sleep
• Hydrate (drink water, not alcohol)
• Take pain relievers (ibuprofen, acetaminophen)
• Eat light meals when appetite returns
• Avoid strenuous activity

When to seek medical help:

• Severe headache unrelieved by medication
• Persistent vomiting (cannot keep fluids down)
• Confusion or difficulty concentrating
• Shortness of breath at rest
• Symptoms worsening after 24-48 hours

Treatment options:

• Oxygen therapy (available at hospitals)
• Descent to lower altitude (most effective for severe cases)
• Medication (Diamox, dexamethasone)