During the Everest expedition, especially when you are at high altitudes, it is most likely that your cardio-pulmonary system gets affected due to the low oxygen content in the atmosphere causing general breathing difficulties such as Acute Mountain Sickness (AMS). This sickness is usually the beginning stage of all mountain related illness with symptoms like headache, lethargy, nausea, vomiting and general flu like symptoms. The AMS can further progress into more serious conditions like Cerebral Edema and Pulmonary Edema. Cerebral Edema is a serious illness that is caused by swelling of the brain while Pulmonary Edema is a fluid built up in the lungs causing serious issues. Both these illnesses can lead to deaths of climbers, if not dealt with proper care.

Another issue during the Everest expedition is sunburn and this can be prevented by using appropriate sunscreen and clothing to protect against the UV rays. Snow blindness is another serious condition that can arise, which is caused by prolonged exposure to the sun’s rays during the daytime.