Altitude Illnesses take on many forms - not every form is life-threatening and are treatable or can even be avoided if you are prepared.
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Bezruchka, S. (2005) Altitude illness: Prevention & Treatment, Seattle: Mountaineers Books.
Luks, A.M., Auerbach, P.S., Freer, L., Grissom, C.K., Keyes, L.E., McIntosh, S.E., Rodway, G.W., Schoene, R.B., Zafren, K. and Hackett, P.H. (2019) “Wilderness Medical Society Practice Guidelines for the Prevention and Treatment of Acute Altitude Illness: 2019 Update”, Wilderness & environmental medicine, 30(4), pp.3-18.