Mountain Sickness

Trekking in Nepal often involves reaching high altitudes where oxygen levels are lower than at sea level. As you ascend higher into the Himalayas, your body needs time to adjust to the reduced oxygen. If you ascend too quickly, you may experience Altitude Sickness, also known as Acute Mountain Sickness (AMS). Understanding the symptoms, causes, and preventive measures is essential for a safe and enjoyable trek.

What is Mountain Sickness?

Mountain sickness occurs when the body cannot adapt quickly enough to the decrease in oxygen levels at high elevations, typically above 2,500 meters (8,200 feet). It can affect anyone, regardless of age, fitness, or trekking experience.

Common Symptoms

• Headache
• Nausea or vomiting
• Loss of appetite
• Dizziness or light-headedness
• Shortness of breath during rest
• Fatigue or weakness
• Difficulty sleeping

If symptoms worsen or go untreated, AMS can progress into more severe conditions such as:

• High Altitude Pulmonary Edema (HAPE): Fluid accumulation in the lungs
• High Altitude Cerebral Edema (HACE): Fluid accumulation in the brain

Both HAPE and HACE are life-threatening and require immediate descent and medical attention.

Prevention Tips

• Ascend gradually: Do not climb more than 300–500 meters in altitude per day once above 2,500 meters.
• Take rest days: Include acclimatization days in your itinerary, especially at higher altitudes.
• Stay hydrated: Drink plenty of water, but avoid alcohol and smoking.
• Eat nutritious food: Maintain a balanced diet to keep your body strong.
• Sleep low: If possible, climb high during the day and sleep at a lower elevation.
• Use medication cautiously: Some trekkers use Diamox (Acetazolamide) to aid acclimatization, but consult your doctor before using it.

What to Do If Symptoms Appear

• Stop ascending immediately and rest at the same altitude.
• Inform your guide and monitor your condition.
• If symptoms persist or worsen, descend to a lower altitude immediately.
• Seek medical help or evacuation if severe symptoms develop.

How Naike Nepal Ensures Your Safety

Your safety is our top priority. Naike Nepal’s guides are trained in high-altitude safety and first aid, and each trek is planned with proper acclimatization schedules. We carry first-aid kits, oxygen cylinders, and emergency communication devices for high-altitude treks. In case of emergencies, we coordinate prompt evacuation by helicopter or ground rescue when necessary.

Final Advice

Altitude sickness is preventable with proper preparation, awareness, and care. Always listen to your body, follow your guide’s advice, and never rush the ascent. A slow, steady pace ensures a safe and rewarding trekking experience in Nepal’s magnificent Himalayas.