Which of the following health conditions can altitude exposure lead to?

Altitude exposure can lead to hypoxia because as altitude increases, the atmospheric pressure decreases, resulting in a lower partial pressure of oxygen in the air. This reduction in oxygen levels means that less oxygen is available for the body to transport through the bloodstream, which can lead to insufficient oxygen supply to tissues and organs. Hypoxia manifests with various symptoms, including dizziness, shortness of breath, and impaired cognitive function, especially as altitude increases and the air becomes thinner.

While hyperthermia, dehydration, and fatigue can also occur at high altitudes or during physical exertion, they are not directly caused by the changes in atmospheric pressure and oxygen availability associated with altitude exposure. Hyperthermia typically results from excessive heat rather than altitude itself, dehydration can occur due to increased respiratory water loss and decreased fluid intake in high-altitude conditions, and fatigue can be a consequence of exertion or low oxygen levels but is not a direct result of altitude exposure.