Acute mountain sickness involves:
— Cerebral hypoxia is causal, and the condition may be life-threatening. Polycythemia does not occur.
— Affected persons may have headaches, insomnia, palpitations, weakness, nausea, vomiting, and mental dullness, and they may develop pulmonary and cerebral edema.
— Treatment is with oxygen, dexamethasone, and acetazolamide and if feasible rapid return to lower altitude.