High-altitude cerebral edema (HACE) is the most severe form of altitude sickness and happens when there’s fluid in the brain. It, too, is life-threatening, and you need to seek medical attention ...

Ryan Wach said his son Zane Wach, 14, experienced altitude sickness while climbing California's Mount Whitney and seemed to ...

While altitude sickness is rare at 5,000 feet, some people may experience mild, temporary symptoms. But for most travelers, adjusting to this elevation won’t be a problem.

Altitude sickness is a condition that occurs at higher altitudes, where there is less oxygen in the air. Learn more about the symptoms, causes, and treatments here.

Altitude sickness is most common at elevations above 8,000 feet. Twenty percent of hikers, skiers, and adventurers traveling to high elevations between 8,000 and 18,000 feet experience altitude ...

Altitude sickness, or mountain sickness, as it’s sometimes called, is what happens when you go up in elevation too quickly causing your body to prioritize what needs the air most.

A teen is in a coma after he hallucinated and walked off a cliff in California, according to his dad. Ryan Wach said he and ...

Zane Wach, 14, was hiking in the Sierra Nevada mountain range in California with his dad when he started to suffer from the effects of altitude sickness and walked off a cliff ...

Altitude sickness is common when people are traveling and either climbing or being transported to a higher elevation quickly. The higher you climb, the lower the air pressure and oxygen levels get.

Altitude sickness typically kicks in at elevations around 7,500 to 8,000 feet. In Colorado, areas with this altitude include Idaho Springs and almost all ski counties.