Upper Mustang may look gentle on the map, but you spend nearly all your time at a high elevation. The risk of altitude illness is real and does not depend on how fit you are, so it deserves a plan.
Why it matters here
You may reach a high elevation quickly if you fly to Jomsom and then drive or walk north. The air is dry, which adds to dehydration, and the cold wind can mask how tired you are. Remote villages mean help is not always close.
Prevention
- Walk slowly and take breaks.
- Drink water regularly throughout the day; the dry air makes this essential.
- Avoid alcohol on arrival days.
- Build a rest day into the itinerary, ideally at Lo Manthang.
- Where possible, sleep at a lower elevation than the highest point reached during the day.
Symptoms to take seriously
Headache, nausea, dizziness, poor sleep and unusual breathlessness are common early signs. Confusion, loss of balance, a persistent wet cough or breathlessness at rest are warning signs of serious illness and call for immediate descent and urgent help.
Medication
Some people use preventive medicines for altitude, but this should be decided with a doctor before the trip. Do not take medicines to mask symptoms and keep climbing.
Sun, wind and dryness
Use high-factor sunscreen, lip balm and sunglasses. A scarf or buff protects against dust and cold wind.
Insurance
Choose a policy that covers trekking at altitude and helicopter evacuation. Keep the policy number and emergency contact with you at all times, and share your plan with your operator.
Cold, dry and high
Dryness, wind and cold combine with altitude to affect the body in several ways. Dehydration happens faster, lips and skin crack, and a sore throat is common. Poor sleep and a mild headache can make you feel worse than you expect. Treat these as signals to rest, drink and warm up, rather than trying to push on.
A sensible daily routine
Eat a hearty breakfast, drink warm fluids during the day and avoid long gaps without food. Walk slowly and take regular breaks. In the evening, keep warm, drink more and avoid alcohol. Keep a note of your symptoms, and share them with your guide. Do not ignore a headache that worsens or does not improve with rest.
Descending when needed
If symptoms persist, moving down is the most effective treatment. In Upper Mustang, descents may involve long journeys or wait for vehicles, so tell your guide early. Confirm with your operator what the evacuation options are and how quickly a vehicle or helicopter can reach you. Insurance that covers evacuation from remote areas is important.
Reminders
- Use sunscreen and lip balm, even on cloudy days.
- Do not take sleeping tablets unless advised by a doctor.
- Report any confusion, unsteadiness or severe breathlessness at once.
Altitude combined with dryness
The dry air increases fluid loss, so trekkers may feel dehydrated even when the temperature is cool. Drink more than you think you need, use lip balm and nasal sprays if helpful, and avoid alcohol. Dryness can also cause nosebleeds and sore throats.
If you feel unwell
Tell your guide, rest and drink fluids. If symptoms persist or worsen, descend. Medical help is limited, so conservative decisions are important.
