Waking up during the night and not sleeping well.In severe cases, you do not have the energy to eat, dress yourself, or do anything. It gets worse during the night and when you wake up. A headache, which is usually throbbing.The symptoms of altitude sickness include: As your body gets used to the altitude, the symptoms go away. This causes the headache and other symptoms of altitude sickness. When you go too high too fast, your body cannot get as much oxygen as it needs. What causes it?ДЄir is 'thinner' at high altitudes. It is smart to take special care if you go high-altitude hiking or camping (like in the Rockies) or have plans for a holiday or trek in high-altitude countries like Peru, Ecuador, or Nepal.ДЄltitude sickness is also called acute mountain sickness. Neither your fitness level nor being male or female plays a role in whether you get altitude sickness.ДЄltitude sickness can be dangerous. Experts do not know who will get it and who will not. For example, you may get a headache when you drive over a high mountain pass, hike to a high altitude, or arrive at a mountain resort. It happens most often when people who are not used to high altitudes go quickly from lower altitudes to 2500 m (8000 ft) or higher. This causes symptoms such as a headache, loss of appetite, and trouble sleeping. Condition Basics What is altitude sickness?ДЄltitude sickness occurs when you cannot get enough oxygen from the air at high altitudes.

Altitude sickness medicine