AMS
n. uncountablen. Stands for Acute Mountain Sickness. A condition where you feel sick because you are at a very high altitude where there is less oxygen. It can cause headaches, tiredness, and feeling sick to your stomach.
n. Abbreviation for Acute Mountain Sickness. A physiological condition caused by acute exposure to low partial pressure of oxygen at high altitudes. Characterised by symptoms such as headache, fatigue, and nausea; typically occurs above 2,400 metres.
Climbers often suffer from AMS when they go up too fast.
The expedition leader monitored the team for signs of AMS as they reached the high-altitude base camp.
While mild AMS is common among mountaineers, failure to descend upon the onset of severe symptoms can lead to life-threatening complications like high-altitude pulmonary or cerebral edema.