what are the risk factors for AMS?

Rapid ascent is the main risk factor. Dehydration, airway infections, overexertion, sleeping pills, obesity, and alcohol are other risk factors. Previous history of altitude sickness is the vest predictor of whether one would be struck again. Non flexible itineraries. peer pressure, tough and stoic personality are some other risk factors. Excess chill and cold exposure is a known risk factor for HAPE.