Could it be a symptom of high altitude oxygen deprivation?
Yes, which is why it's easy to then convince people to evacuate. People do die on Everest, including EBC treks from altitude sickness alone, so severe symptoms usually lead to taking the trekking back down the mountain.
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Yes, which is why it's easy to then convince people to evacuate. People do die on Everest, including EBC treks from altitude sickness alone, so severe symptoms usually lead to taking the trekking back down the mountain.