[High altitude pulmonary edema: the importance of early diagnosis].

In high altitude setting is present a syndrome linked to hypoxia, exercise and low temperatures, causing multiple organ damage, which may also lead to death. The main clinical pictures are represented by acute mountain sickness, high altitude pulmonary edema (HAPE), high altitude cerebral edema. A clinical case with the main determinants of HAPE, during a trek in the Himalayas valley is described.