Shredder is suffering from acute mountain sickness. The symptoms of acute mountain sickness in decreasing frequency include headache, sleep disturbance, fatigue, shortness of breath, dizziness, loss of appetite, and vomiting. The likelihood of becoming ill is increased by the altitude visited, predisposing factors of the individual (prior pulmonary disease, fluid retention), prior history of acute mountain sickness, and rapidity of ascent combined with level of activity. Age and physcial fitness are inversely correlated with with incidence.