Moderate altitude sickness is a little more intense than mild short-term altitude sickness. Fatigue, weakness, and shortness of breath gets worse instead of improving over time.
Climbers may start to experience a loss of coordination and although the person may still be able to walk on their own, it will become more difficult for them to do so. Normal activities will also become more difficult.
This may be accompanied by symptoms of nausea, vomiting, tightness, congestion in the chest and severe headaches that are not relieved by pain medication.
The best remedy when experiencing signs of moderate altitude sickness is immediate descent.
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