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).
Fatigue Fatigue is a common health complaint by individuals. Fatigue is also referred to as feeling weary, tired, exhausted, lethargic, and a lack of energy. There are several causes of fatigue from sleep disturbances to some diseases or conditions. Treatment of fatigue is generally directed toward the condition or disease causing fatigue.