Mountaineering is a favorite adventure sport for many youngsters. In untrained individuals, sudden ascend to high altitudes can cause severe deleterious health issues. Individuals vary in their physiological response for adapting to the low oxygen conditions. Acute altitude illness can present as acute mountain sickness (AMS), high-altitude cerebral edema (HACE) and high-altitude pulmonary edema (HAPE). As emergency physicians, we stand as public health guards and it is our duty to educate people about risks involved in adventure sports. 

Keywords: Acute mountain sickness; High-altitude cerebral edema; Highaltitude pulmonary edema.