<P> Although minor symptoms such as breathlessness may occur at altitudes of 1,500 metres ( 5,000 ft ) , AMS commonly occurs above 2,400 metres ( 8,000 ft ) . It presents as a collection of nonspecific symptoms , acquired at high altitude or in low air pressure , resembling a case of `` flu , carbon monoxide poisoning , or a hangover '' . It is hard to determine who will be affected by altitude sickness , as there are no specific factors that correlate with a susceptibility to altitude sickness . However , most people can ascend to 2,400 metres ( 8,000 ft ) without difficulty . </P>
<P> Although minor symptoms such as breathlessness may occur at altitudes of 1,500 metres ( 5,000 ft ) , AMS commonly occurs above 2,400 metres ( 8,000 ft ) . It presents as a collection of nonspecific symptoms , acquired at high altitude or in low air pressure , resembling a case of `` flu , carbon monoxide poisoning , or a hangover '' . It is hard to determine who will be affected by altitude sickness , as there are no specific factors that correlate with a susceptibility to altitude sickness . However , most people can ascend to 2,400 metres ( 8,000 ft ) without difficulty . </P>
when do you start to get altitude sickness
when do you start to get altitude sickness
above 2,400 metres ( 8,000 ft )
above 2,400 metres ( 8,000 ft )