Evidence-based
Acute Mountain Sickness
Written by:
•Last Updated: November 20, 2025
Acute mountain sickness is caused by reduced air pressure at high altitudes (>8,000 feet/2,400 meters), leading to lower oxygen availability and impaired oxygen transfer to the blood. Symptoms can include dizziness, trouble sleeping, fatigue, headaches, nausea, and shortness of breath.
Acute Mountain Sickness falls under the Other category.
