Acute mountain sickness (AMS) is a complex medical condition brought on by exposure to high altitudes. As the altitude increases, the partial pressure of oxygen in the atmosphere decreases leading to a reduction in the amount of oxygen available to the body. This can lead to a range of symptoms including headache, nausea, fatigue, and dizziness. In severe cases, AMS can be fatal.
Fortunately, there are a number of things that can be done to avoid AMS. These include: