high-altitude sickness

As the 40-year-old descended from the summit, he caught high-altitude sickness and died.

“The unprepared trekkers, who don’t have support guides, die due to the high-altitude sickness,” he said.

Each year, deadly accidents, including ones caused by avalanches, blizzards and high-altitude sickness, are reported on Nepal’s mountains.

Two mountaineers began experiencing high-altitude sickness Friday night.

Two mountaineers began experiencing high-altitude sickness on Klutlan Glacier near Mt.