#altitude_sickness  effects (as nosebleed or nausea) of oxygen deficiency in the blood and tissues at high altitudes
  supertype:  #hypoxia  a very strong drive resulting from a deficiency of available oxygen in the blood and bodily tissues (short of anoxia)
  subtype:  #mountain_sickness  nausea and shortness of breath experienced by mountain climbers above ten thousand feet

No statement uses or specializes #altitude_sickness; click here to add one.