High altitude sickness is one of the major problems encountered by most of the trekkers and the climbers who visit Nepal for the purpose of trekking and peak climbing. As Nepal is a mountainous country, most of the trekking terrains and trails in the nation are uneven and at higher altitude. Many of the popular trekking itineraries and destinations in Nepal are above 4000 or 5000 meters of altitude. And hence the problem of high altitude sickness is very common amongst both domestic and international trekkers. As it is a frequently encountered problem, one needs to be very careful about the problem and also regarding the ways to encounter them. High altitude sickness is generally encountered by the trekkers when they trek above 3000 meters of altitude to start with. However, it also depends on the individuals and their experience of high altitude climbing. The domestic trekkers are generally equipped to high altitude trekking as they are well aware and used to of the trekking in Nepal. High altitude sickness mostly is faced by the visiting tourists and trekkers when they have difficulty in coping with the rising altitude.
The popular trekking itineraries like the Annapurna Base Camp Trek, Everest Base Camp Trek, Gosainkunda Pilgrimage Trek, among others, might also bring up with the problem of high altitude sickness for the visiting trekkers as the altitude during these trekking crosses past 4000 meters of altitude. The best way to prevent high altitude sickness is gradual acclimatization to the rising altitude during the course of the trekking. Drinking enough fluids, walking slowly up the trail with enough rest in between and not walking more than around 1500 meters in a day are some of the easier measures that can be followed by the prospective trekkers to avoid and prevent the problem of high altitude sickness during Nepal trekking. Though it might not seem apparently, altitude sickness is a major problem and hence the trekkers should not take it lightly in any case. If the problem of altitude sickness is ignored and not address in time, it might also take the life of the trekker. Hence, one needs to be very careful about it when it comes to trekking in Nepal in the high altitudes. If any trekker faces the problem of high altitude sickness, then he/she should be allowed to drink enough fluids and take down to lower altitude and allowed to take rest. Shortness of breathing is a major symptom seen during high altitude sickness and bringing back to normal breathing would be the effort to address the problem.