Definitions for "HAPE"
High Altitude Pulmonary Edema. Liquid in the lungs as a result of high altitude exposure. Pretty serious condition that can quickly lead to HACE if a descent to lower altitudes is not made immediately. See also HACE.
This is a form of altitude sickness which results from a fluid build up within the lungs. This fluid prevents effective oxygen exchange and results in a shortness of breath and extreme tiredness even at rest. Many also suffer from a persistent cough which brings up a white frothy fluid. It is imperative for those who suffer from this to descend to lower altitudes as quickly as possible.
High Altitude Pulmonary Edema. This is when liquid starts to form in them lungs due to exposure to high altitude. Can quickly lead to HACE if descent is not immediately made to lower altitudes