altitude sickness

English Thesaurus

1. effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes (noun.state)

hypernym	:	hypoxia,
definition	:	oxygen deficiency causing a very strong drive to correct the deficiency (noun.state)

hyponym	:	mountain sickness,
definition	:	nausea and shortness of breath experienced by mountain climbers above ten thousand feet (noun.state)