Dictionary.com
Thesaurus.com

hypobaropathy

American  
[hahy-poh-buh-rop-uh-thee] / ˌhaɪ poʊ bəˈrɒp ə θi /

noun

Pathology.
  1. a condition produced in high altitudes, caused by diminished air pressure and reduced oxygen intake; mountain sickness.


Etymology

Origin of hypobaropathy

hypo- + baro- + -pathy