Altitude sickness and Mountain sickness

Altitude sickness noun - Effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes.

Mountain sickness and altitude sickness are semantically related. in effects of oxygen deficiency topic. In some cases you can use "Mountain sickness" instead a noun phrase "Altitude sickness".

Mountain sickness noun - Nausea and shortness of breath experienced by mountain climbers above ten thousand feet.

Altitude sickness and mountain sickness are semantically related. You can use "Altitude sickness" instead a noun phrase "Mountain sickness".