"Early symptoms of HAPE include a subtle nonproductive cough, dyspnoea on exertion and reduced exercise performance. As HAPE progresses, cough worsens and the subject may have a debilitating degree of dyspnoea, even at rest."
HAPE& #39;s mechanism results from low amounts of ambient atmospheric oxygen, so the subject& #39;s blood is unable to bring enough oxygen to the body.

Nothing is "attacking" the lungs, but the lungs show similar inflammatory symptoms to covid, because O2 in blood is low.
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