Quick Answer
Symptoms of altitude sickness to watch for when climbing include headaches, nausea, fatigue, dizziness, and shortness of breath, which can start as early as 8 hours after ascending to high altitudes, and can worsen over the next 24-48 hours if not addressed. These symptoms can be severe, even life-threatening if left untreated. If you or a fellow climber experience any of these symptoms, descend immediately.
Recognizing Altitude Sickness Symptoms
Altitude sickness, also known as Acute Mountain Sickness (AMS), can be a silent killer if not identified early. Keep a close eye on fellow climbers, especially those who are inexperienced or have a history of AMS. Be aware of the following symptoms: headaches, nausea, fatigue, dizziness, and shortness of breath. These symptoms can worsen rapidly, especially if climbers ascend too quickly or ignore warning signs.
Managing Altitude Sickness
To prevent AMS, ascend gradually and allow the body to acclimate to the higher elevation. For every 1,000 feet of ascent, rest for at least 24 hours before continuing to climb. For example, if you’re ascending to 14,000 feet, spend at least two consecutive days at 12,000 feet before pushing higher. If symptoms do occur, descend to a lower elevation and rest for 24 hours before attempting to ascend again.
Treating Altitude Sickness
If you experience severe symptoms or suspect AMS, descend immediately to a lower elevation, ideally no more than 1,000 feet below. Administer oxygen if available, and encourage the affected climber to rest and drink water. Monitor vital signs closely and seek medical attention if symptoms worsen or persist. In extreme cases, consider helicopter evacuation or emergency medical transport.
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