Mountain Sickness Topic Guide
Altitude Sickness (Mountain Sickness): Altitude sickness (mountain sickness) is caused when a person's body is not able to adjust to a higher altitude. Acute altitude sickness symptoms fatigue, headache, dizziness, insomnia, nausea, decreased appetite, edema, and social withdrawal. Most cases of altitude sickness are resolved by going to a lower altitude. Altitude sickness can be severe and life-threatening if it progresses to high altitude pulmonary edema (HAPE).
Pulmonary Edema Pulmonary edema is a collection of excess fluid in the lungs. Pulmonary edema is classified as either cardiogenic (caused by heart problems) and non-cardiogenic. The primary symptom of pulmonary edema is shortness of breath. Pulmonary edema can be a life-threatening medical situation. The treatment for pulmonary edema can be ICU care in some cases, and medication in other cases.