Liquids and rest with a lowered head recommended. Caused by too rapid an ascent to above about 9,000 feet. Victim has headache, drowsiness, loss of appetite, nausea, vomiting and abnormal sleep patterns. Treat with descent to about 3,000 feet, rest, adequate fluid intake and headache pain medicine. Do not administer sleeping medicines as they may mask pulmonary edema symptoms.
Treatment is immediate descent, rest and oxygen.
In its beginning stage, flesh is unfrozen but turns gray and waxy-looking. Rubbing or applying direct heat to the body parts increases damage. Always assess its potential and be prepared for changing weather. Avoid wet clothing and dress in layers. Beware of wind-chill factor and cover your head and hands.