... altitude sickness. He's not permitted to take any oxygen on the plane to fly back to Beijing. Should he risk flying back without oxygen or stay put until he feels better (fluid out of his lungs). Or should he get someone to drive him to a lower elevation and wait until he feels better to fly back. There aren't too many places in Tibet with a hospital other than Lhasa, which is at 13,000, so moving to another suitable location isn't easy. He came from 133 ft (Beijing). They had planned a trek to Everest basecamp but the earthquake happened. So they hiked in the area to higher than 13,000 and he got sick. Any suggestions about what he should do to get safely back to Beijing?